Ideally you will want overloads as AOD's mage hit sometimes slaps especially if she has some stacks from the encounter.
A familiar is useful if this is your first time at the boss a beast of burden familiar is fine but if we end up with lots of people that shouldn't be necessary.
Ripper demon familiar is fine
Here is a video if you want to see someone talk about the fight from a necromancy point of view with mention of rotations and such (You don't have to do this though).