I'm afraid I can't give any warrior-specific advice, being that my only 85 tank is a DK (and it's an alt! My main is a pwiesty).
But I will say this - you seem to be very very focused on your talent spec. Unless you're skipping a 100% crucial talent like Bastion of Defense or Toughness, a misplaced point here or there is not going to kill you.
You're also going to find yourself doing a lot of tweaking with your spec as you learn the fights better and figure out what works for you. If you need the threat, you may find yourself speccing for threat talents - if you find that Vengeance takes care of threat for you (as everyone here claims), you may find yourself going after survival/utility talents like Blood Craze or Safeguard. So don't worry too much about getting it 100% correct on the first go-around. I know that I'm still tweaking my Disc and Holy specs to fit the situation and my style.