Building my first PC, need a bit of help

Looking to build my first PC. It's main purpose will be gaming, and I have a budget of around $1,200. I've also more or less got my build down, with the help of various people/resources around the internet. I just want to make sure it looks good. Pretty much the most important thing is that the components will last me, both in that they won't burn out quickly and they won't become completely obsolete quickly, because I probably won't be able to afford to upgrade/replace for a bit.

Anyways, here's what I've got so far:

PCPartPicker part list / Price breakdown by merchant / Benchmarks

CPU: Intel Core i5-3570K 3.4GHz Quad-Core Processor ($169.99 @ Microcenter)
CPU Cooler: Cooler Master Hyper 212 EVO 82.9 CFM Sleeve Bearing CPU Cooler ($24.99 @ Newegg)
Motherboard: Gigabyte GA-Z77X-UD3H ATX LGA1155 Motherboard ($144.99 @ Amazon)
Memory: G.Skill Ripjaws X Series 8GB (2 x 4GB) DDR3-1600 Memory ($46.99 @ Newegg)
Storage: Samsung 830 Series 128GB 2.5" Solid State Disk ($112.98 @ Newegg)
Storage: Western Digital Caviar Green 1.5TB 3.5" 7200RPM Internal Hard Drive ($89.99 @ Newegg)
Video Card: Gigabyte Radeon HD 7970 3GB Video Card ($407.55 @ Newegg)
Case: Raidmax Super Hurricane (Black/Silver) ATX Mid Tower Case ($48.20 @ Amazon)
Power Supply: SeaSonic 620W 80 PLUS Bronze Certified ATX12V / EPS12V Power Supply ($88.98 @ SuperBiiz)
Optical Drive: Lite-On iHAS124-04 DVD/CD Writer ($18.98 @ Outlet PC)
Operating System: Microsoft Windows 8 (OEM) (64-bit) ($87.99 @ NCIX US)
Total: $1227.63
(Prices include shipping, taxes, and discounts when available.)
(Generated by PCPartPicker 2013-01-11 12:39 EST-0500)