I had RP in 2015 followed by SRT in 2017. If I were in your position knowing what I now have discovered through research and personal experience I would opt for RP followed by radiotherapy. I would not risk a metastasis. Biopsies though very useful and necessary do not paint a complete picture. Gleason score is a significant predictor and represents another part of the picture. I had a PSA of .034 prior to SRT followed by .019 after. Dr.s were puzzled by this and could offer no explanation. By 2025 PSA had reached .2 followed by .14 Urologist doesn't see this as cause for concern as I'm 78 and will pass from something else.
I wish you much luck with whatever you choose. The more you research the more you'll discover how much is still unknown about this condition.