The RAM is bad. Your going to use up all your DIMM slots, and you'll also have to run them at 2T, which is slightly slower than 1T. Get 2x512MB, and then at least you can upgrade to 2GB in the future.
I have that motherboard, and it is great. I didn't get the 3rd eye, although I may buy one to go with the board. Get the 6800GS instead of the 6800GT, it is way cheaper and despite having less pipelines makes up for it with a much more aggressive clock speed for the memory and the core.