Suggestions for $1050 Gaming Build!?

Hey people! I've been putting together a parts list for a gaming pc build for my first build, and it is going to be around the $1000-$1050 price range. I would like to ask you guys for some possible suggestions to improve my build!

Specs:

CPU: Intel i5 3570k

MOBO: Asrock z77 Pro3

PSU: XFX P1-750X-XXB9 750W Modular PSU

RAM: Mushkin Enhanced Blackline 8gb (2x4gb)

HDD: Seagate Barracuda 500gb 7200RPM

GPU: Gigabyte Radeon HD 7950

CASE: NZXT Phantom 410

Optical Drive: Liteon iHas 124-04

OS: Windows 8 64-bit

I plan on doing a CrossfireX with the HD 7950 when it becomes necessary. And I might OC the CPU to 4ghz, I'm not sure yet, and if I do, I'll probably buy an aftermarket heatsink fan. Also, I don't plan on doing any editing, maybe a bit, but nothing serious! Any suggestions for improvements? Thanks in advance! :D

http://pcpartpicker.com/p/uAS1

Managed to fit a SSD and 1TB drive in. Slightly better mobo, and what I think is a better case. But thats debatable. Also a CPU cooler, and some extra case fans.

Thanks alot, you added great things that will help me in speed of the computer! I modifed it a bit to my likings...

http://pcpartpicker.com/p/uBse

I scrapped the 1tb HDD because I realized I have a 500gb external HDD anyways! With that save of money, I added an XFX Modular PSU. Thanks again TallGeese! :D