No one can really say unless you provide some insight as to what you're going to be using it for. Since you're posting in a XIV forum for advice on it, I'll assume you want to run XIV on it. Unfortunately, until ARR is released and people get to test it, no one will be able to tell you how well it'll perform for this particular game.
Generally, this is a solid build. If I had to make a blind estimate, I'd say you have too much rig. Good if you're going to be playing other games that will push the limits of your hardware, but since XIV is being tuned down for PS3, you probably won't take full advantage of what you have on XIV alone.