I run FFXIV ARR on my 3770k and its completely flawless. Never had a single problem running any game on ultra settings so far with this processor. FFXIV ARR is a lot more GPU intensive than CPU though and does tend to put my GTX670 at 100% usage most of the time. Fully recommend the 3770k, just make sure your GPU is up to scratch too!
So would say go higher than the GTX670 since it runs at 100% does that mess with your picture after prolonged use? also is that with high settings?