Since cata is coming so close, our guild has set up achievement runs for members to get their drakes. Tonight we got all the normal achievements and next week we will be finishing the hardmode achievements.
I am mainly just looking for advice, as a tank, on gear suggestions and maybe even respeccing.
Your tanking set is more than enough, this fight is maining about the healers cordinating who stands behind the block and who heals the tank, if they all stand behind the block at once the tank dies, so cordination needs to be good.
If you have another trinket as good as the Unidenfiable organ then swap it out, TUO isn't that brilliant due to sindy not hitting you more than enough to get fully buffed from it, before you run off behind a block.