Hmmm, not sure what to tell you about gear, your set looks decently put together. I'd just keep running Naxx25 and Ulduar runs where you can to grab upgrades. One major word of advice, of course, save any tank gear that isn't woefully behind what you have, if it has different sorts of stats. Balancing def, hit, and expertise around the relative caps is part of the fun of playing the tank gear game. =)