keep in mind intel is releasing a new set of CPUs this September (was supposed to be released in June, but they pushed back since they have so much stock of i7s out there right now!) and are going to discontinue the current i7s after that. Even if the new CPus are overpriced it should drive i7 920 prices down a lot.

Otherwise rig looks good, currently the OCZ Vertex and Intel SSDs are pretty good bang for the buck, newegg even has a sale on the Intel SSDs today from 3pm-midnite, something like $250? Great price for it. The next gen of SSDs aren't due out for a year or so, so its a decent time to buy an SSD. You can put the OS or just WoW or both on the Intel SSD, dunno about the Vertex.