I decide to just go in blazing, see what happens. I take out the bouncer outside, step in, and as soon as I shoot the second one the managers try to escape. Then I get out, take the bike and drive-by them like rabbits.
There are other ways to complete this mission, in fact ones that are FAR easier than the one you just wrote out.
I don't really understand the point of this thread either, Undress to Kill is a fairly hard mission if you don't know what you're doing seeing as though it's a tight space which bouncers + cops come at you from two directions, then (assuming one plays the way you did) run out of the building, find a vehicle and chase them down trying to target them.