232 badge gear.
You are on the right path. I would work towards getting the 232 badge gear that you can buy for emblems of truimph. Also pay attention to the gem slots. Most people are going to tell you screw that and just drop blue gems into your gear. Those people smoke too much crack =D j/k everyone. If your bonus is +9 or better gem for the bonus. Use one of the green or purple gems that have an avoidance stat and stamina. Also don't discount the +10 to stats enchant for chest/+10 stats nightmare tear that you can get.
For your weapon, some people say Mongoose, I tend to not agree with them. you aren't getting all that much of a benefit from the agility. Try bladeward. Thats what I have. havent had any complaints.
once you get a couple peices of that 232 you should have NO problem tanking almost any heroic. Cept H HOR. thats just a pain in the butt, even with 12 pieces of 264 gear.
I'm not the man hiding behind the door in fear of danger. I'm the one that knocks... -WW, BB