Yeah Z68 > P67 motherboard, possibly even a GEN3 board would be worth considering. ASRock Extreme4 Gen3 or something similar.
As for the PSU, wouldn't generally recommend CoolerMaster GX series, either go with a Silent Pro, or stick with something from Corsair, Antec, SeaSonic, XFX. Modular PSU would be recommended, but not required.
Also stick with a 750w unit if you plan to add a second card in the future, 650w is cutting it a little close for i5-2500k+x2 GTX 560Ti's. Especially as I'm sure you'll want to be over-clocking some of those components ;-)