My bathroom had to be gutted and as you can see in the picture, I have a sunken shower stall. On the other side of it is the master closet which I would like to incorporate into the bathroom to make a larger bathroom. How difficult and expensive would it be to move or fill in the shower stall and move it to make the bathroom larger? It's a cabana bath but it is the master bath also and its tiny as far as the vanity and floor area goes. The shower stall is the largest part of the bathroom!