Right off the bat, the mobo and CPU are incompatible. The CPU only takes FM1 socket mobos. Not AM3+. Because your budget is $500, I'd drop the SSD, and invest that in the other components, and get one later on.
Actually, at MC, if you buy an i5 2500K or i5 3570K, you get $50 off the mobo.
So, get the i5 2500K and Pro 3, and it comes out to $205. That's cheaper than the i5 alone at Newegg! 380W is enough with no GPU, but if you want to add a GPU int he future, you'll want to upgrade the PSU to 450-500W.
PSU: CORSAIR Builder Series CX430 V2 (CMPSU-430CXV2) 430W ATX12V v2.3 80 PLUS Certified Active PFC Power Supply http://www.newegg.com/Product/Prod [...] 6817139026
(I'm keeping it because 50 W > $3 to me, unless there's a difference I don't know about..?)