On your main worry, the Sleep and Hibernate functions are going to be controlled by the BIOS on the motherboard.  Look for motherboards that say 'Certified for Windows 7' on them, or if that fails, if you can find a manual or a list of BIOS functions for the motherboard, the necessary functions are S3 - Suspend to RAM (Sleep) and S4 Suspend to Disk (Hibernate).

For components, PSU would be my biggest issue.  Seems very high wattage for your build unless you're planning on a very power hungry video card later.  Efficiency for a PSU is best at around 50% of its rated max, and your build will probably be idling at less than 100 W and hitting maybe 250 at load.  Aim for around 400W  would be my advice - less power use and save you some cash.  Also modular designs like the one you picked reduces efficiency, due to added resistance at the connections.  I've read some great things about the FSP Raider 80Plus Bronze 450W lately, hitting over 90% efficiency, only issue being that its hard to find and is way over the $55 MSRP.  A Corsair CX430 V2 would be another good choice, easier to find, and only 35 bucks after rebate.

An i5 CPU seems like a bit of overkill if recording TV is the main goal, or light gaming.  Might consider a cheaper option.  AMD might be a good alternative with their fusion CPU's - while not as efficient CPU wise, it would give a lot more GPU power for any gaming without getting a discrete card and that power/ heat.  The A8-3820 would seem to be a good option, about 3x the GPU ability of the i5.  It would likely use a bit more power on full load, but would idle/low load (recording) for less power than the i5 + a separate GPU.

On top mounted cases - I'd suggest against focusing on them.  The bottom mount are designed to keep cases cooler, so most modern PSU's are designed with a bottom fan. Depending on the top mount, you're either blocking it entirely or blowing hot air right over your processor.  So long as you have a decent front fan and rear for the case, blocking any sort of top fan on a bottom mount case wouldn't matter much, and most cases have some side venting.  On a low power system like yours, heat isn't going to be an issue.  It might open up some more options for you.

You're probably not going to find a better mechanical HDD with the warranty you want than the caviar black (1 tb only, 2tb has failure issues); most HDD makers have slashed their warranty lately on all new drives (including WD).  The newer one's aren't necessarily less reliable, but its more just a business decision the makers all went to.  A 2TB drive might give a better cost ratio, but do seem to have a little higher failure rate (1-2% a year higher).  For most of the things you're mentioning, a SSD probably won't speed you up much (sleep saves to RAM not the disk and you're not booting or launching applications often).  Might not even save you much power since if you're recording your mechanical would be spinning up and down, and that's what uses the most power.  So if you got a SSD, I'd probably go with a smallish ones.

Anyways, some thoughts, hope they help.  It will mostly depend on what you really envision doing with it, but it sounds like you at least know what you're doing and had some pretty good things in mind, just a few tweaks.  Good luck.

For hard drives I never get less then a 5 year warranty...

Margins are very low on drives... as such, it is very expensive for a company to RMA in warranty drives...

If the warranty is 5 years, you can expect that the drive will not fail before 5 years 99% of the time...

Thanks to all for the suggestions.  I went ahead and ordered this morning, but not exactly what I planned before.

HD: I wimped out on the SSD & went for 2 spinners.  Like idea of separate boot & data drives and have done it before.  Boot drive doesn't need to be huge but smaller drives aren't much cheaper than terabyte drives, so I went with two of the 5-year-warranty WD Caviar Black.

Case:  Silverstone PS07B.  I (gasp) DROVE to a STORE and decided that the mid-tower cases I had been considering are too big for my taste -- strangely bigger than the mid-towers I've been getting for years at home and at work on build-to-order boxes.  Liked the idea of positive pressure design & wanted front usb3 & easy-to-clean filters for sure, so it came down to a choice of that Silverstone or their Temjin.  Reviewers seem to prefer the Temjin and think that the important difference between the two is that the Temjin has one big fan while the PS07 has two 120mm fans.  *I* think the important difference is that the PS07 is an inch longer, and gives an extra inch of margin on those cases' biggest concern -- the back of the PSU comes close to the back of the dvd/bd drive(s).  I've downloaded manuals, checked dimensions, and even the Temjin should barely fit, but the PS07 fits more.  Back to the fans -- some NewEgg user comments complain about fan noise on the Temjin, so I went checked for replacement fans and found the NewEgg's only fans in that size are by Silverstone.  Didn't want to be locked in to a brand that isn't consistently quiet.  The PS07 uses common size fans so no such issue.

PSU:  no change.  Seasonic 560, modular, 80+ gold.  Say what you want about the theoretical inefficiency of modular connectors, by definition it can't be hurting MUCH in a unit that meets the 80+ gold standard.  I *hope* the rig might be more reliable with a top-quality psu.  

CPU: up to the 2570K.  It has the better graphics that might delay the day when I have to buy a graphics card.  And I want something fast enough to handle whatever I might want to do in 5 years, like new games.  Anyway, I can't bring myself to buy old generation AMD processors when the replacements are due so soon.  With Intel Ivy Bridge I won't have to feel obsolete quite as soon  

Graphics:  still integrated at first.  But if I don't need something better for the Fallen Enchantress beta I will for something someday.  I'll eventually want Shogun Total War 2 and I hear it is demanding -- part of the reason for a fast cpu and a psu that can handle at least a mid-range card.  If I had to do it now, it would be an ATI 7750 or 7770 because they seem to have good idle power consumption.

Memory: went with something that doesn't have tall heat spreaders because the case manual warns that there isn't room.  8 GB for now, but it might get tossed later when/if I need more or faster memory.  This is the only possible throw-away component in my list.

Mobo:  Asus  P8Z77-M.  The small case forces an mATX board.  Wanted an overclockable mobo because I think/hope that the tougher components to support overclocking voltages might mean longer life & better reliability for non-overclockers.  Spent a lot of time reviewing brands and it seemed like Asus was tops for reliability, followed by Gigabyte, MSI & ASRock.  (Sorry if I am dissing anyone's favorite other brand).  FWIW, when I did a NewEgg power search for the features I want, only 5 brands even had contenders --just the 4 I mentioned + Biostar.  User comments seem to knock MSI for recent poor component placement and Gigabyte for intrusive sound drivers (which comes close to one of my old pet peeves).  So it came down to Asus & ASRock.  Almost ordered a cheaper ASRock, but its manual says it has just 2 case fans, 1 3-pin and 1 4-pin.  My case has 2 fans and the Asus has 3 4-pin fan connectors.  I don't know much about fan control but I thought I'd better have at least 2 4-pin connectors.  So, Asus.

Overclocking:  hmmmm.... I lied.  Seem to have wandered into an overclockable cpu and an overclockable mobo, so I probably won't be able to resist dabbling a bit.

TV tuner card:  order after I see everything else work.

External drive for backups: Toshiba Canvio Basic, 1 Terabyte, usb 3.  In tests I ran at work a while ago, a different model Toshiba completely blew away comparably-priced same-size WD & Seagate usb-3 drives.  So I go with Toshiba for usb HDs until they give me a reason not to.

I took the cheap, slow shipping options, so it will be a week before I know if I have blundered       But if I have, I'm sure someone will be kind enough to let me know in advance  

PS: re standby & hibernate:  the system that had the problems years ago claimed to have the right features.  They just didn't work.