The build looks really nice, although one thing i'd change is the GPU. Would recommend going for Radeon HD 6800 series, they're just a little bit more expensive ( 10-20$ more ) but offer far better results. Also Kingston HyperX memory performs better, so unless you're Corsair fan ( i am, best cases available ) would recommend going with kingston.
Just my opinion thuogh, the build is already great
