With what you are trying to accomplish in the short term i think that spec looks good. Long term, if you want to be MT, that spec is fine as well. To make it any better you have to go to EJ forums and see what the "best" MT setup would be, and even then Im sure they would say your build is fine. This is what I like about DKs, there is no "cookie-cutter" tanking build, you can actually move a couple of talent points around to your playstyle.