Yeah, but by then the 45nm CPU's will be out, so getting a compatible board like the P35 would be a good but still there's nothing wrong getting a 965P.
I don't see the point getting 2 7950GT's, you can just get 2 7900GS's for lot less and overclock then to the same speed as the 7950GT. The only difference is that they have 4 less pixel shaders.