The WD Blue is a solid hard drive it's just a bit slow. If you purchase an SSD first, and later on get that WD 500 Blue you won't have to re-install your O/S (Windows).
Just add a case to this build. This build allows you to add another one of those cards later on in SLI. There isn't any reviews on that Asrock board yet for the fact it was just released on the market less than a week ago.