You'll also want to drop the CM Scout, 10.5" max gpu cards. If you ever do decide to upgrade to a 5870 (or Fermi, or any large card) you're either going to have to dremel out the hdd cage or buy a new case.
Check out CM 690II, Lancool K-62, Antec 902 for cases that have all the features of the Scout, the same price range, and support larger cards.
If you're super ambitious and want a monster like a 5970, Antec 1200 or CM HAF 932 come to mind.
Or you could just buy a behemoth of a case like Corsair 800D or Silverstone TJ07.