I play a warrior solo as my main and play an elemental shaman triple box as my alt. I've multiboxed a lot of ZG and just a couple MCs. Next week though we're going to start practice splitting BWL so we can double up on Broodlord Heads for the AQ patch and planning on brining my shamans there as well.

In MC, really Rag was the only part I had trouble with, since I got knocked backed and separated and trying to get them all back in position was a bother. This could be solved with better starting positioning though, like using a wall as Fuji said. The rest was pretty straightforward and not much different than just playing it solo.

You should definitely talk about dispelling and decursing and what the expectation is there and how you plan to do that. Fortunately I didn't have to deal with that, so I got no advice there.