Wow, that is an ambitious project! Looks like you will get it done in a few days. You can also check the floor for any water damage very easily but it looks good. Progress and after pictures are a must on this since it seems there is a lot of struggles with the bathroom for many owners especially with a rear bathroom.
Wish I had a little tub though the shower is so large I don't think I could replace the pan unless I have the glass door & walls cut higher.