I am currently 71 years old to be 72 in April 2024. with the Gleason score 8 and above I would definitely go for proton beam therapy (with the Hydro-gel space oar) especially because of the amount of cores that you have are positive. Do not go on active surveillance you're taking a big risk. I only had one CORE positive with a Gleason score of 3+4 = 7 and my urologist said to me let's nip this in the bud. jmho- good luck