This is pretty much the same build I am thinking of getting, but im waiting a bit to hear official R600 stats and pricing to see how things go. I have a feeling the 8800GTs will be the best monster price-performance Dx10 card for awhile though so im not being too patient.
And **** YEAH to that antec case! My friend got it and the thing keeps everything well under threshold temps and is made so well it kills almost all the sound with fans on medium!