I wish I had read this before yesterday. I had a pretty tough time. Anyway, I eventually got all my trinkets. Some additional tips:

1. Do not hit Ursula with your tank. I moved Coren to one side of the room and when she spawned at about 30%, I move to the other and let the slaves hit her for a bit before resuming on Coren. The idea is you want her to have threat on a dps and NOT on your tank or healer.
2. I ran into a lot of healer mana problems leading to deaths at the end. Keep an eye on healer mana and stack some spirit.
3. Obviously try to get as close to lvl 92 hit cap as you can . A really long fight is not ideal.
4. Make a use macro for the dark brewmaiden's brew. Especially for your healer and tank as this has a big impact on the fight.
5. Pick up the adds whenever you can. This will save your healer's mana.