That actually looks like a pretty good build. I might go for that instead, but I definitely want to stick with the silverstone case.
I had to cut a few corners to get the two 580s which is why I went with the cheaper HAF X which is still a great case. And to that guy who said it needs more power supply an 850 watt power supply is good. Your best bet is to go with the original RAM you had as that will save you the extra $50 you need for the SilverStone case. And Hoshiyo that power supply is fine. Just like 1280mb of VRAM is also fine for 1080p resolution.
Folding Team: The Misfits SIX TIME CONTINUOUS TEAM COMPETITION CHAMPIONS