I am a bit confused. You had a Lupron shot, but then say if your T rises you’ll want to go on Orgovyx. Don’t think you can do that - how will you ever measure your 3 month PSA’s accurately if you are on ADT?
So if you are anxious about a rise in T/PSA and you desire ADT, you almost have to have radiation sooner, way before the .2 level. If you don’t you “could” become castrate resistant (emphasis on could) the longer you stay on ADT without doing something definitive about the cancer. Radiation will damage cancer DNA and hopefully the cells will die. That’s the one-two punch you need.
It’s good that you are consulting with someone other than your surgeon. Surgeons will always tell you to wait as long as you can in the hope that their surgery will be successful. They never want to share the glory with a radiation oncologist who steps in and mops up what they missed. No judgment just the facts.