The HAF 912 is a much more popular case for like $2 more.
Everything else looks fine, I particularly like all the XFX and Crucial that I see on there.
Most people around here would tell you to get a Z77 and 3570k combo, but what you have will be the same if you don't intend to do any OCing.
However, one thing I would absolutely not do is get the copy of the OS you are getting. It sucks, really hard.
For starters, I would get the 64 bit version unless you absolutely need to run 16 bit programs (as in ones that worked on Windows 95/98).
You won't be able to use more than 4 GBs of RAM if you have a 32 bit version of Windows. So either drop to 2x 2GBs or up your OS to 64 bit. I would suggest the 64 bit + 8 GBs of RAM option myself.
Also, the OEM license really sucks. You should get a retail upgrade CD instead. It costs pretty much the same and has a way better licensing scheme. It is ridiculous how much better the retail upgrade CDs are compared to the OEM copies.
Also, unless you intend to sell this computer, the OEM license wouldn't be legal. You can check the license yourself.
The retail upgrade wouldn't be legal unless you qualified it either, but its more likely to be legal and its a whole lot better regardless if it is legal or not.
It may be a little more difficult to find copies of since everybody and their mother likes to sell illegal OEM copies to people, but they are out there if you put forth some effort. I think I got mine at a website called Blue Mountain or something like that.
If it says System Builder somewhere on it, its the wrong one. If it says Anytime Upgrade it is also the wrong one.