The problem with your current choices is that the graphics cards aren't all that great, at least for the two you posted links on. Do you know how to build your own computer? There are better deals, and combo deals, on newegg if you do, and it can save you money in the long run. I mean, the processor is good, but then you wouldn't have a decent graphics card in my opinion, for ultra settings in WoW.
i dont know how to build a computer no sorry