In order to work on the tower, the porch floor must be installed. I did not finish any parts for it because it will not be difficult to finish later. I just wanted to get it done, so I could work on the tower. The tower walls can not be installed until the porch floor is assembled.
I had already finished the porch railings beforehand so that was good to go. It's about the only porch part that has to be finished before installation.
Just like I did for the kitchen bay, I prepared the tower openings on the exterior since these edges will be visible through the windows. I applied ceiling paper to the tower ceilings.
I also installed the second floor tower floor extension because I won't be able to apply flooring without it.