Well. As a person who rocks the 3570k OC'd at 4.5GHz stable, SeaSonic 620watt PSU, and that ASRock Extreme4 motherboard, I think you've created a great computer!
As I mentioned earlier, I HAVE a 3570k on an Extreme4, and I've never had a single issue with hibernation or sleep...
For your purposes, the processor is a tad overkill, but if you're fine with the price, I say go for it. The REAL potential of that processor is when its OC'd. You don't need crazy coolers that BlurriedVision recommended, I am OC'd at 4.5GHz with a $30 Cooler Master Hyper 212+. As for the graphics card, you don't need to bother with extra cooling. The HD7850/70 series are an amazing card for the price. Sapphire is a great company, and the ONLY possible way you could overheat that card is by putting it next to a heater. Those cards overclock like CRAZY. my 7850 stock wasn't able to max out Crysis 3, but with a decent OC, I was able to. Great card
You don't neccessarily overclock your CPU if you don't need to, but it is good to know that you've got 4 cores running each at 4.5Ghz, and that nothing will get in your way. Its a bitchin feeling hahaha
If the case I sport was still in production, I would've recommended it to you, as it has superior cooling for a lower price if you buy it at Walmart. But alas, thats not the case. Don't fret, the 410 is still a great case.
Your builds great. Follow through with it. If you have a microcenter that you can drive to, you can get a MAJOR deal on the 3570k and ASRock Extreme4. I got both of those for $270, vs the $330 (or the $370 when I built my computer) it costs originally. Try to get as many parts from your local Microcenter as possible, as they have the BEST deals than any other retail store OR online. They are better than newegg, tigerdirect,
eBay, ANYTHING.
PLUS, IF you do have a issue with that Extreme4, Microcenter has a "returns, no questions asked" policy. Return it if it doesn't work.
In my experience, the Extreme4 was the best motherboard I've ever worked with bar NONE!
Here's my build FYI (and to show it off a lil lol

)