I've built a system for my father in law very similar to the one you describe, except without the SDD's. It was an I7950, GTX 295, 12GB DDR3 (PC3 16000) RAM, with 4 7200 RPM HDD's. Same result in Dalaran, about 30 FPS. But very very smooth with no stuttering, lag, or any performance issues what so ever. Even plugging the computer into my 42" 1080P Plasma made the game look perfectly beautiful and play without any performance issues at all.