Second time build, need suggestions

Hey all, new here well this is my second build (first one by my self).
So my last build was about a couple of days ago. Me and my brother built it. i picked the parts and paid 1500 approx but he loved how well it ran so he paid me 1700 and bought it off me. So im building again and need advice. my old build was as follows:
Cpu-i7 2600k ( want to use the same one)
Mobo: Gigabyte p67a-ud3(we bought 2 of these because we found them when they werent on sale so ill use that one till the p8p67 pro comes out then ill switch to that)
Ram: 8gb's XMS3(suggest what to use)
Case: Haf-932(wanna try something different)
GPU: Evga GTX 570 SC(dont know what to get for this one, dont want just an identical system but if thats the best for my price range thats fine. ( will probably SLI or XF with whatever i get in future)
PSU: Corsair HX-850 (suggest something new wanna try new supplies.)
HD Samsung f3-raptor(we bought 2 for raid, but ended up using only one, so i will use this)
SD suggest
Heatsink: Hyper 212+ (want to try H50 this time)

WILL BE USED FOR GAMING. and my monitor resolution is 32" 1080p (1920x1080)

Please advise thank you. Im in USA btw.