Hello,
should run fine, though your graphic card is not what we call "gaming card". But will run Wow just fine. Its lower end gaming card but its great for HD videos. So, if you are not satisfied with framerates your are getting on your PC, first thing to change would be graphic card,as the rest of PC looks just great.
Let us know if you are satisfied, and I am sure yoû will get many suggestions on this site.
Good gaming on WoW.