Help me build the rest of my PC for less than $700

I have Case(Thermaltake Galaxy), HDD(500 GB), Video Card(Nvidia 570), and Windows 7, 22" monitor, keyboard, mouse and speakers.

I'm trying to shop around for the motherboard, Ram, CPU, and PSU.

This is the best i've found so far on newegg.com

G.SKILL Ripjaws X Series 8GB (2 x 4GB)

CORSAIR Professional Series HX750

Intel Core i5-2500K Sandy Bridge 3.3GHz

ASRock P67 EXTREME4 GEN3