couple of things.... 1 I would get this ram (x2) over what you chose http://www.newegg.com/Product/Produc...82E16820231145, same company, better sticks, and cheaper... and higher bandwidth memory will for sure eek out a few more fps
2. unless you need a particular port on that sound card, it's pretty worthless in Vista. They changed the audio in vista to be software only, so there's no hardware acceleration. Creative has some hacked stuff, but it's far from fully baked and creative is a horrible company for support.

I think it's a mistake to spend 150 bones on that mobo just for pcix 2.0. You might also consider the GTX or Ultra 8800s over the GTS. The G92 based cards do have better shader perfomance, but the High end G80's have wider memory bus on the card itself (256bit-62GBs vs. 384bit-86GB/s)
BTW I have that case, and love it.