To get the most expertise in prostate cancer find a Genito urinary oncologist. They specialize in prostate cancer, Medical oncologist do all different types of cancer and cannot specialize in that one area

Did they find anything else besides the Gleason 4+3? That is a little aggressive, but not real fast moving. Same as I have and I’ve been around for 15 years with it.

SBRT radiation works quite well. My brother is also a 4+3 and he had it about two years ago and has had no issues since.

Your age is also a factor, If you’re over 70 then SBRT Can be quite sufficient. You do want either CyberKnife or MRIidian If possible. CyberKnife is more focused than regular SBRT but MRIdian Has a narrower beam and has a smaller chance of affecting nearby tissue like the bladder.