Ghost is actually not that great in close quarters. Since it's visible from 5 tiles away, you have to hide pretty far away from a corner to prevent people from seeing you when turning it. I'd say seductress/fairy is better because it also ignores armor but captures instead, and obviously ragnarok is pretty strong but since it can even overkill power armor, it's not that great unless you don't mind blowing up the loot. But ragnarok+wand of peace/rending is quite good. Witch outfit (for MC through the floors) would be where it's at imo. Scout with your puppets, get a few seductresses/fairies to stun to extra ones and proceed. Maybe Destructor for some tanking, but you can have the (armored) puppets do that.
I'm currently running an earlier version with the old invis while I wait for the kinks with the latest release to be fixed. That said, I systemically obliterate the map with mass telekinetic projectors to flush the cockroaches out of hiding, so there tends to be longer sightlines.
I don't have fairy armour.
I did actually use mass seductress during that successful run. However, I have pretty mixed feelings about the utility of Seduce given its high cost in TUs, Energy, Morale, etc, relative to the outcome and how I really don't want to have to deal with enemies getting back up and retrieving weapons when I'm running shit armour given how long the mission tends to go on, especially on JS Ironman. Mike Myers mass murder with ghost knives definitely afforded greater peace of mind; shock and awe also panicked the rest of the mansion, making it much easier to deal with.
If the Witch outfit is usable, I'm definitely running that next time (I was unclear as to whether or not it was permitted and didn't have it at the time of my first mission), especially given how it enhances the Telekinetic Projector, assuming I don't find that Mind Control is too powerful (which I'm leaning towards at this point).