HAHA YOUR LEGS ARE HORRIBLE... oh wait, I'm using the same ones
I don't know the requirements for the ICC ten man, but I'm willing to bet that 37k hp with 28k armor totally unbuffed is plenty for starting it - you should switch out that gem in your helm for exp/stam and your shield enchant for 18 stam, that's really all that I see in your gear, everything else looks solid. Hit rating is a little low, but that's just the luck of the draw I guess. Are you planning on getting the t9 legs next? Even though they're mediocre, they would be a big upgrade for you, trading shield block rating for hit would be great.
I'm no warrior, but I'm pretty sure that Improved Heroic Strike is better than Tactical Mastery