Hi Robert,
I am in a similar situation: T2C; Gleason 3+4, same weight and reasonably fit ( I had been training for my first marathon before Covid cancelled everything, and my Hormone treatment kicked in-but more on that later). I am however 10 years older , and there is a bit of significance to that.
As you have found, there is a huge amount of anecdotal information out there; and quite a bit of data. BUT, and it's a big but, the data is extremely hard to navigate and almost impossible to use as a basis for decision making. I have been looking for months, and have not found what I would regard as a sound basis for choosing between the options. One of the first things you will encounter is that the medical outcomes (measured as crude survival; and- more usefully- as time to recurrence ) are pretty similar across the main first line treatments; certainly over a 5 year period, and pretty much up to 10. But the data sets do have some inherent biases ( for example, radical surgery tends to be offered to the younger, healthier part of the PCa population) and invisible variations ( for example relating to the skills of the surgical/radio team dealing with you). And at 58, you really want a 30 year prognosis, since that is likely to be your 'normal' life expectancy.
What is boils down to in practice, as others above have pointed out, is a rather subjective reaction to the risk of, and your feelings about, the various possible side effects. Probability data exists but it is pretty broad brush and very difficult indeed to map to your own circumstances to give you a properly weighted assessment. Have a look at the Tackle Prostate Cancer site ( treatment options) for a one page summary of the data.
There is ( sort of) a way through this. What I eventually did was to sit down and put some numerical weightings on how I felt about the various side effects ( this is, and has to be, entirely personal) ; then I multiplied that by the probability of each ( best estimate I could find for my age); then multiplied again by how long I might have to live with it. I can't pretend that this is as scientific as it sounds; but it does help cut through the fog and bring a bit of objectivity to a mish mash of information. I ended up with a basis for a decision ( which in my case was to go for RT preceded by Hormone treatment). I have no idea if it will prove to be the best answer. But it's one I can live with. And this is perhaps the one bit of advice I would give- make sure you are at peace with whatever decision you make. There will be doubts and dark days* whichever way you go, and you don't want to waste energy and emotional strength on misplaced regret. Fact is, there are few bad decisions here- just good outcomes if all goes well, and bad outcomes if it plays out that way.
Wishing you the very best of luck
* eg- it's already clear that my Prostap is not working as intended!