The hard drive you selected is IDE, you will want to change that to a SATA drive.
Other than that everything looks compatible, but a couple of comments:
This is a pretty crazy system, putting the Value Select RAM in there doesn't seem right. If your going to go all out like this, get some better RAM.
I would reconsider going SLI. It benchs extremely well, but I have heard the real game performance isn't as good and some games aren't compatible.
Also on the video card, you might want to just the GT version, whether SLI or not, as the GT can easily be OC'd to the Ultra speeds.
Other than that, have fun with it, it will definately be a kick *** system