Dec 26 update:
We put another coat of mud on today. Started to put the exhaust system in. Finished the closet that my wife insisted upon
My brother putting a coat of mud on.
Some views
Looking in from door

Back Wall

First step in putting in the exhaust system. I used sheet metal to cover between two studs, floor to ceiling. The exhaust piping will enter the back of this sheet. The entire space between studs will be used as a exhaust pipe. It will make more sense tomorrow.
Another view of metal covered stud and exhaust fan.
More tomorrow.