Have travelled this way recently and still travelling.
Bit younger than you (50 when diagnosed) with a Gleeson score of 3+3 (revised to 3+4 after removal, which is common). I was initially told that all options were open to me, so being an OCD engineer, set out to research the lot.
Longish story short, my conclusions were
HT - an Oncologist told me very definitely that no young (that meant under 70 to her) should choose HT unless they had no alternatives. I.e. Advanced disease or salvage only.
External beam RT - much the same as above.
Brachytherapy (small seed) - would have been a realistic option, though not preferred due to my age. However, with a 60cc prostate I was over the size limit without HT first (see above!) so not a good candidate for it.
AS - Another realistic option though not preferred by her due to age and also a problem for me due to unusual diagnosis path of my father. Also OCD nature would be an issue as I tend to subscribe to the view that the best place for a carcinoma is the bucket.
Her recommendation, even as an oncologist, surgery!
You then get the question of open vs. LRP vs. RARP and the various approaches. I eventually chose the RARP Retzius sparing route because it seems to offer the best chance of a rapid return to continence, though figures are similar for RS conventional after a year. Admittedly the RS method is not universally accepted as the future and at this point, getting it done on the NHS might require some effort and persistence. I had the luxury of health insurance.
Surgery done just under 7 weeks ago. Though my recovery has been untypically beset with complications (see other thread), I still think I made the right decision. Fully nerve-sparing and I'm told there is a very high confidence they got it all, organ-contained, negative margins. Just awaiting PSA result in a couple of weeks time.....
For me, in the end there wasn't really very much choice. Harder for you though by the sound of it