Also, since I will have both a SSD and HD, what goes on what? From what I know so far, I think games go on the SSD and everything else goes on the HD. Is there anything else I should know?
OS and the games you are currently playing go on the SSD. You can always move them to the hard drive later if not playing and vice versa, Basically anything you want to load fast you want on the SSD, (game maps etc).
As far as the Hard drive. Since it's only going to be storage get a 1 tb 7200 rpm blue (WD thats my opinion) Seagate is a good company too. But i would stick with WD or Seagate. I say get a blue because you won't need the extra performance of a black since it's basically only storage. The one you picked is fine.