My guild isn't able to run Kara yet, but that won't stop me from gearing myself up for it. I've mostly followed the reccomended non-raiding tank gear list for loot, but after I collected most of those sets I've turned to upgrading my gems and enchants on the gear that I have.
I am aiming to swap out the +12 def enchant with a +12 stam enchant, and to swap out my cloak of eternity with the devilshark cape, which still hasn't dropped for me. I already have the crest of sha'tar, I just didn't have it equipped when I logged out.
I would say that your base stats look good. 34% avoidance, 12.5K armor, and 13.5K base health are nice stats. Only three upgrades I would look at pre-Kara for you would be the [item]Gyro-Balanced Khorium Destroyer[/item] and some [Item]Bracers of the Green Fortress[/item]. They are both crafted and fairly easy to get the mats for. Finding a craft for them will probably be harder.