I agree with the 16GB RAM. My personal changes would be up that PSU to a HX650. Even if you wanted to crossfire you don't need an extra 300W. That HX650 is also modular with a 80+ Gold rating It goes for ~$120.
+1 to that GPU, though go GHz edition if you can spare a few bucks. Make sure those Ripjaws can fit under that 212. They have high heat spreaders which can cause conflict. Otherwise everything else is good