Hello!
As always I've been lurking these forums along with the elitistjerks forums when I'm not playing the game (or sometimes being caught afk in groups because I'm here instead

), but for the point of my post: I'm returning to post 3 weeks after my last advice post. My last post was made when I had just returned after my pre-3.2 break, and I got some very helpful gear advice thanks to you guys, which I've been working on hard and finding upgrades where I can.
My "GearScore" has risen from below 4k to just under 5k right now and I am currently tanking everything
except for 25m ToTC and 10m/25m ToGC. I'm sitting at [unbuffed] almost 26k armor, 37k hp, 548 defense, 147 hit rating, 19 expertise, 26.52% dodge, 20.75% parry, 16.58% block.
I have recently got some upgrades, as well as changed some gemming in my gear because I noticed I was having some threat issues sitting at around 9 expertise and 120 hit rating unbuffed. I started researching it and realized that if you need to gem to make up for holes in your gear, then so be it even if you lose some popular HP or avoidance. Am I wrong? I haven't had any issues with survival at all, so I figured I could spare some HP and avoidance to raise my expertise and hit rating up to help my threat out.
Anyways, where should I be placing my focus right now? I have access to triumph badges with raids and the daily heroic, I have access to conquest badges out the yin-yang I am severely overgeared for heroics so no issues there. I have access to almost any raid I want, except for the ones listed above because I don't believe I am geared enough for it (feel free to tell me otherwise).
So what now would you all recommend for me? How's my spec, gemming, gear, enchants?
Any help provided is greatly appreciated, and I thank you all for your time.
Armory:
The World of Warcraft Armory
Edit: I'd also like to point out that, if it's not obvious, I am trying to get myself geared for 3.3 so I do not have to wait, or waste time, doing current content when that patch is dropped. I would like to be prepared for the new content and be able to jump straight into it tanking like there's no tomorrow.