Help and wisdom!

Armory Link: The World of Warcraft Armory

I need assistance on my toon, and an evalulation. I am a 80 Tankadin, and have been gearing through raids and such.

I have my build, but I don't believe that I am headed in the right direction with my gear combination as well as my talent spec.

Can you review and give some advice on some gear/items that i should be shooting for.

Also, pre-raid buffs, I am at 73% Unhit, 57% Void, and like +22 Overcap, how or what do I need to focus on to improve stats?