Should be a nice build Crazy. If I was thinking of building right now with this kind of budget, I'd seriously consider holding off for a few weeks until we get a better idea on the retail pricing for the new i7 chips and x58 motherboards.
Other than that the only thing I would change would be the Freezer 7, and that's only because I would rather have to muck around with mounting brackets than have to rely on the push pin style mounts....just hate those things..:-)
I agree with random_2 for the waiting part.
Is there a specific reason you are going for the 780i motherboard apart from sli?
You can just as easily get any other chipset and equivalent Ati gpu and crossfire as I believe it will be more reliable and somewhat cheaper.