I don't particularly like the Formula boards. They're overpriced.
Here's what I'd get:
Mobo: Gigabyte GA-P55A-UD3 $120 after rebate. No need for additional PCIe 2.0 slots if you don't want Crossfire. Gigabyte is just as good as Asus too, and the recommendation depends on what you're after.
PSU: Corsair 550W $80 after rebate. 750W is massive overkill for a non-Crossfire build.