Cheers to a good build
Get the Hyper 212+ at buy.com
, with $8 shipping on Newegg I find it is not worth it on Newegg at all (I can get the Hyper 212+ regularly for $20 here in Canada).
x2 non-unlocked + GTX 460 should be fine on that PSU and mobo. Unlock the x2 and you may have complications due to both that PSU and mobo.
CX430 isn't a bad PSU, but it really isn't great either. It has much less voltage on the 12V rail, is only rated for efficiency at 30C ambient, isn't 80+ rated, and uses a sleeve bearing fan (a quiet one, but with the upward mounting on most power supplies the sleeve bearing won't be that effective at all; other power supplies use ball bearing)
A much better case for the same price would be the NZXT M59
. For $10 less, the HEC/Compucase Blitz
is also a great choice.