PSU won't cope with the 2xGTXs.
If you are overclocking, then the e6300 is a good choice, otherwise, it'll be the bottleneck in the system. As for running 2x GTX, unless you are getting a 2407fpw anytime soon, you don't need 2.
Oh, and you don't mention what speed ram you are getting, best getting DDR-6400 (800) at least.
Dave