What motherboard/psu should I get for this build?

So I'm becoming a pc gamer and decided to build a pc, because it's cheaper.

These are the planned specs for the build:

CM Storm Enforcer (Just purchased)

i5 3570k

660ti but I'm thinking radeon 7950 HD.

barracuda 1TB hdd.

256gb ssd

G skill ripjawsX 2x4 memory

windows 7 home edition 64 bit

Arctic Cooling, Freezer XTREME Rev.2

+120mm extra fan.

Thanks for your support.