83 when diagnosed with a Gleason score of 9+. It had spread to pelvic lymph nodes. Had radiaion for 9 weeks and and hormone injections every 3 months. Just turned 85 and plan on living into my 90's as did my dad. Other than some side effects from the radiation and Luprom ( hormone ) my life hasen't changed. Maybe I'm exceptional or just stubborn, but I refuse to allow PC to change my way of life. Workout schedule at the gym never was interrupted even during the days I had radiation. Same with yard work and social life.

If you choose radiation please go with Proton, since you cancer has not spread. It targets the cancer and doesn't impact surrounding areas.

As to prostate removal, in your case I would not do it. You will have side effects which could be worse than those from radiation and hormon treatment, and as others have said, the PC could still be present. A friend at the gym had his removed but the cancer came back and he had to go through the radiation and hormones plus deal with the side effects of the prostate removal.

Wish you the best.