First Time Build - Final check before I buy!

Hi Everyone. First time poster and first time builder. Wanted to put my parts up here to see if there is anything I am missing or if there are any mistakes I am making.

Approximate Purchase Date: Less than a week.

Budget Range: Need to keep it at or under $800.

System Usage from Most to Least Important: Gaming (warcraft, skyrim, diablo 3, etc.), internet/media

Parts Not Required: Keyboard, mouse, monitor, speakers, os.

Preferred Website(s) for Parts: Newegg, amazon, microcenter, fry's. Whatever is cheapest.

Country of Origin: usa

Parts Preferences: Tend to like intel and nvidia

Overclocking: Yes, maybe not right away, but yes.

SLI or Crossfire: No, possibly down the line, but not right now.

Additional Comments: Here is what I've come up with. Let me know if anything should be changed before I buy!

Intel Core i5-2500K Sandy Bridge 3.3GHz
i5 2500k

ASUS P8P67 PRO (REV 3.1) LGA 1155 Intel P67
ASUS P8P67

CORSAIR Vengeance 8GB (2 x 4GB) 240-Pin DDR3 SDRAM DDR3 1600
Corsair Vengeance 8GB

MSI N560GTX-Ti Hawk GeForce GTX 560 Ti (Fermi) 1GB 256-bit GDDR5
560Ti Hawk

CORSAIR Builder Series CX600 V2 600W ATX12V v2.3 80 PLUS Certified
Corsair CX600

COOLER MASTER HAF 912 RC-912-KKN1
HAF 912

Optic drive I'll pick up for cheap and I'll figure out a hard drive solution until later. Priced all this out at around $775.