As i can see it you're maybe a pinch too low to go tanking ToC, but i'm no expert in tanks.
But we do sometimes raid Ulduar and there you may have a chance, but again i don't really know.
but i can't see any rparticular raid achievments so i would like to see the armory for character you have raided with
I also urge you to get some epic gems, cause all items are worth enchanting and gemming properly imo.
and you should really start getting that Hodir rep going, i see you are still hated with them and the shoulder enchant there is priceless
I feel a bit uncertain but since i am not the right man to make the call and we don't have a DK classleader yet i think maybe the GM should decide
Anyways good luck