Swarmy,
1st, thanks for your service. I have bookmarked some Arkansas hospitals however, you might screen Dallas, Memphis, St. Louis also as potential hospitals. See:
health.usnews.com/best-hospitals/rankings/cancer/arkansas. I was surprised that Arkansas didn't register for a University setting... it might be there I just didn't go further.
You have had more than your fair share of setbacks. As Sara Anne indicated cystectomy is probably the real option left. You do want a hospital and surgeon that do many of these a year. That means at least 25-35 a year so it probably means something out of state. I am attaching a good read on the 3 types of diversions:
my.clevelandclinic.org/health/treatments/12546-urinary-reconstruction--diversion
Good luck and we do try and listen. Rants, questions even good news is always welcome.