Hi,
It seems to me it depends how good you feel for your age and what your personal desire for longer life is.
Your psa is doubling roughly every 6 months so it could rise as below: Your rate isn't fully consistent.
0.8 Jan 24
1.6
3.2 Jan 25
6.4
12.8 Jan 26
26
52 Jan 27
104
208 Jan 28
If you just had ADT it might hold out for 5yrs from when you start, say Jan or Jun 26, to Jan 31 when you'll be 88+.
On the other hand SRT might hit it harder and put it back more years. Although it might have side effects. The ADT might have side effects as well. Your condition is critical to the choice.
If it was me and I felt in good condition at your age, I go to the gym and feel well, I'd look for SRT treatment at least.
All four options look reasonable depending on your expectation of life. For me, I think the oncologists have it right and I think I'd want whole field. Although your incontinence might be a big factor and it might make you double incontinent. So there are risks.
I'm not an expert and these things are a personal choice. But if I reach 81 I'll be looking to reach 90 and then 100.
All the best
Peter