The box in the ceiling was for a heater (just a big electrical heating element). I'm going to put in a vent fan/light instead. I stuck pieces of tape on the header to mark the rafters for hanging the sheetrock.
Oh, I also pulled most of the outer wall in the hallway out. It was the only way the tub was coming out. This bathroom had a pocket door, which I hated since it was always coming off it's track.
The overall size of this bathroom is only 61"X71" or 5X6 feet (stud to stud). Not a lot of room to work with, but that also means it isn't too big a project to finish in a reasonable amount of time.
We are discussing whether or not to replace the tub with another tub/shower or whether to put in a shower stall with a door. What do you think?