i5-3570K Ivy Bridge
gtx 660 (or any nvida card you want to spend the cash on.)
the rest you can pick, try not going TOP of the line (droping 400 bucks on a mobo to me is... just no.)
def overkill/money waster. can build somthing similar for ~700 with os, and yours is looking to be over 1500... no point in that, is there?