Seems like a reasonable plan, let it roll and work on getting a PSMA scan into the scanning mix if PSA goes up. If you can’t take the lack of positive measures, then push for radiation whether you need it or not or have something to aim at
Your biopsy and surgery pathology appears to be pretty benign although it was a long time ago and can not be double checked easily. The bladder neck part would be more concerning if your pathology was something other than 3+3 so it an observation without any exceptional risk attached with it.
Don’t know what I would do in your situation but I would discuss with as many doctors as I could to see if there is any agreement in principal. What would Mayo suggest? What would UCLA suggest? Kaiser should allow you to seek out second opinions I would think?