Looks like a fine build, bump the i7 930 to a 950, the price difference is like $20 and you get a significant clock boost for the price. Other then that it looks good. I would also consider weather you will SLI that GTX460, if so I would get a 750 watt PSU.
would doing a SLI setup with them be a significant increase? i wouldn't do it now. but maybe after a year.