The question I would ask myself is "Do I really need upgrades?". Your system looks pretty good as-is, and the only game you have mentioned is WoW, which probably runs like cake on that system. Don't spend money just to spend money. Unless something is giving you trouble, I would just save the money and buy a whole new system in 6-18 months. Having the best PC is fun, but having other stuff is fun, too (this coming from someone with a fulltime job, 2 gaming laptops, a car, and a decent chunk of change in the bank).