You should also be using Devotion aura, I didnt look up your armory (at work) but you should be specced into improved devo aura. It adds a lot of mitigation, and makes the healing go further. You dont need more threat, or more damage. That is, of course unless your wifes shamans are geared to the teeth. If thats the case, just have them hold off a bit during the start of the pull and then you should be fine. Paladins have way more aggro aquiring abilities now, 1 actual taunt, one semi taunt, plus a ranged attack or 2.