I faced a similar situation. I was originally treated for a Gleason 9 in 2013. My cancer returned 5 years later and I opted for 40 treatments of EBRT. I did agree to hormone therapy as studies suggested it might help. My cancer returned for a 3rd time in 2023 and was treated with stereotactic radiation. So far all is good.
So much of this is based on how PCa impacts us as individuals. In the end, we are all different. The best approach is to be comfortable with the decision you made based on what you and your MD currently know. After that, it's time to take a deep breath and move forward. Stay on top of it with regular check-ups and if you see a PSA rise ask about a PMSA PET scan to locate any new issues that possibly could be treated.