Grab your healing or resist pets, up your incoming heal as much as possible, find a viable party to cover all aspects of each boss fight (tank, buffer, healer, hitter, second hitter, etc.) and get going. Duelist101 as well as many other fansites have fantastic guides that are great to have on a tab while you're running Darkmoor. Make sure everyone talks strategy and knows their role for each fight as not to create confusion mid-battle. Seeing the wizards the have above, I'm sure you're more than enough prepared mentally to run Darkmoor. Good luck! Let us know how it goes!
Another option, in addition to thelastdiviner's suggestions, is to go through Mercenaries for Hire. That's what I've been doing since I can't get past my mistrust of anyone in DM. It took all of about 10-15 minutes to get through the first part yesterday and I'm hoping to get through the upper halls with them today.
. Can anyone tell me the best and fastest was to finish this dungeon?
