Razor,
Sorry you have to face what is going on but, welcome. First, let's hope mitomycin works!
If it comes to a cystectomy you want a practice that does a LOT of these. 50+ a year. Too many see mostly prostatic cancers. A big teaching hospital or group that has a specialty in bladder cancer like MD Anderson as an example.
Also, I am linking a bookmark that many of us have used on the 3 main diversions to plan ahead. I am not sure our hyperlinks are working so copy and paste: https://my.clevelandclinic.org/health/articles/urinary-reconstruction-and-diversion
Good luck as post with any questions.