Appreciate all the good ideas. More info I didn't include...
Two of the bedrooms are on the second floor, no way to steal one.
Second floor span and size of lumber does not support a bathtub.
Don't want to give up the second first floor bedroom.
I think we have decided, with your help, to take part of the walk in closet for a master
bathroom and leave the original one alone. I will still have enough room left to
have a "walk in" closet, although it will be much smaller. Thanks to all! John