I would go with the Lian Li K-62 case. The Antec 900 pretty much sucks for cable management. As for the memory, the board supports up to DDR3 2000 so the DDR3 1600 would work fine. I've got to where I dont care much for Corsair power supplies anymore, the quality has gone down in the last year.
Oh thanks, I like it, but I'm trying to find one with a side panel window. I like being able to see my components and LEDs. Any good cases in that aspect?
Thanks for the suggestions, I think I might just be getting the NZXT Tempest EVO. It has like everything I want, even though my RL friend already has it.