Ragnasty,
I have no answer for your situation, but I can offer some information on making BCG decisions.
The article linked below describes BCG use in depth. You may recognize your particular situation.
You may want to consider a second opinion if you and your doctor are at odds, or if your current doc has no other options to offer you Ask for a referral to a major cancer center - there is a link on this site to the NCI Designated Cancer Centers.
www.nature.com/articles/nrurol.2015.58
I hope you can find a course of care that offers hope for success and with which you are comfortable.
Best
Jack