[Kim473]

Originally Posted by Clgy_Dave2.0

Why not just build your own shower pan using the Schluter shower kit? You can leave the drain where it is, and cut the pan to whatever size shower you want. The kit comes with a 48"x48" pan that you just cut to size. It's not a hard DIY job. You can do it in a day easy. The kit costs around $600. Then you can tile it with whatever you choose. Put in a Schluter Niche and you'll have a plenty big enough shower. You could build the wall beside the toilet, so you would only need a regular shower door. They come in sizes to fit variable openings. It doesn't have to be exact.
For example This door fits 31-33" openings.

Here's how to build the Schluter shower pan:

https://youtu.be/Dy1pMQ3zQLw

This.