Really, really, really don't go with an ATI card.
You said your choice of CPU and GPU is final - and frankly, they were fine in the original post.
The memory you picked is fine, the one playallday did isn't. (Dual channel mode, you only get 50% of the speed with playallday's option)
ATI cards + MSI == double nightmare. The openGL crashes, the cheaping out on essential components... (ATI cards have notable driver problems, MSI graphics cards have rickety, noisy and downright bad parts. Personal experience on both.)
General way to good computers here: First ignore War, playallday and Joe88. Place extra weight on my and FAST's opinions, because we actually have professional experience. It might sound arrogant but in the long run there's three kinds of people here - those who know, those who don't and those who are irritatingly loud and clueless. I don't know who else is a professional or ex-professional - though I wouldn't be surprised if garf is. alltooamorous also sounds competent.
Also, I suggest separating the G11 from the main order. Less hassle that way. And I'd go with an Asus P5Q, but that's personal preference - the Gigabytes aren't that horrible either.