If you are getting 8GB of RAM you'll need windows 7 64 bit not 32 bit (32 bit only supports ~4GB). RAM is also cheap. I'd pick up a dual channel RAM with 1600 cas9. In fact they are basically the same price CORSAIR Vengeance 8GB
. I wouldn't trust the power supply that comes with a computer case. They are generally terrible. Other than that, it looks fine.