Lupron or Not at 76?

Background - biopsy in 2022 was completely clean. Biopsy in 2026, Gleason 9. PET shows cancer is localized.

Had first appointment with oncologist yesterday. Recommended 5 weeks of Photon radiation treatments and 2 years of Lupron. I'm fine with the radiation but:

I was told the success rate is 80% for the radiation and another 5% with the Lupron. One problem is the 80% success rate is not based on age groups so it's difficult to decide if the Lupron is worth it because:

I was told at 76 the 'recovery period' for Lupron = the amount of time you get the treatment. So 2 years of treatment + 2 years of recovery = 4 years. I'd be 80 and I was told at this age you often don't see the side effects of Lupron reverse so it seems high risk for not much reward.

Am I thinking about this correctly?

Has anyone roughly my age gone with Lupron and really regretted it? Why

THANKS!

FWIW at this point I need to decided between:

Radiation only
Radiation + 1 year of Lupron (my idea)
Radiation + 2 years of Lupron (recommendation from urologist and oncologist).