I can't find any 4x1gb that are not ridiculously overpriced and you'd save money by going with 2x2 now. The antec psu crewton suggested is better. Maybe you should link to all the parts you're getting. Or fill this out http://www.tomshardware.com/forum/261222-31-build-advice
since a 2500k+6850 is not balanced unless you were going to cf 6850s and you want to have a balanced system.