Since you probably know exactly what he does with it, and you can justify taking out the GPU for the 940 and the 790GX, I would probably agree with you Joga. And the 790GX will be enough for him I think, it's not as if he's even going to be doing 4-way CF.
Those 9600s are dirt cheap though, great deals.
EDIT: StealthXStream 500W
is back in stock.