Hi,
There are plenty of threads answering this type of question.
It's a hard call with age, Gleason being factors. I was told the lesion was 13mm diameter near the edge of the apex which led me to believe surgery would give a good chance as none should be left behind near the bladder.
I was told he'd take the nerves on one side. It went pretty well.
On my profile is a link to my full account.
At the time I was hell bent on surgery asap as I didn't want it to grow any further. I sometimes felt anxious about having an op although if you imagine going to sleep and waking up job done what more could you want. You also know fast if it was successful as your psa goes to almost nothing. Nothing is certain though.
Brachytherapy wasn't offered to me but it sounds attractive and I believe it has fewer side effects.
It can depend on your own fears and hopes and whether you are very keen on retaining maximum sexual function. For me he could have castrated me if it gave a better chance. There is someone on here who refuses treatment to live a fuller life. We're all different.
Let us know how you feel and how you're going.
Peter