Since u not gonna OC, drop the fanciful RAM and get the Kingston PC3-1600 DDR3 8GB at $77 instead. That will save u $20.
AsRock B75 Pro3 M + Intel i5-3470 combo is only $355 (PCThemes). Same result as your MSI CPU+MB combo, but at a lower price.
Drop the Seasonic G-Series PSU. Since u not gonna SLI/Crossfire, the Seasonic S12II 520W is more than enough for ur Powercolor 7950. $89 vs $149...
Instead of getting the Corsair K70, I recommend getting the Ducky Shine keyboards instead. Even Filco or Rosewill keyboards can do better than Corsair ones. Coz if I didnt remember wrongly some (if not, all) of Corsair's mechanical keyboards are membrane-mechanical mix. Means that Corsair keyboards are not actually fully mechanical in functionality. Or a CM Storm Keyboard can do the job well enough.
Use the amount saved and squeezed out of the main rig to reward yourself with a 27" 1080p monitor for gaming instead. Top up a bit more to buy the 27" 1080p AOC i2757fh monitor at $399 (Media Mart) instead of the lowly Asus 23" monitor.