Building Computer . How does this sound?

Well it looks like you have a good computer build set-up there, one thing I would make sure you keep in mind when getting the motherboard is since you have an Nvidia card make sure it supports the SLi which I am sure it does. And the Intel processor do you need one that is the Extreme QX6850 cause that processor alone is going to cost more than $800 I'm not too sure about the memory you have since I looked at it online. If you have other options for memory I would look into OCZ and Corsair. Other then the 2 suggestion I mention you have a good build. I'll list my computer build.