Hi Steve,
Just thought I’d offer a thought as we’re the same age, I had surgery 2 years ago. The decision for me was relatively easy as I was diagnosed with T3 and G9 so I just wanted it gone.
Leading up to surgery, aside from general fitness, I’d second the recommendation to start the pelvic floor exercises. There’s an app called Squeezy for men to help remind you. I still use it now and have not had any significant continence issues.
Post surgery take it easy. Walk a bit each day, and gradually increase your activity levels as you feel stronger. Depending on how physical your work is you might need to be ready to take a few weeks off.
Hope all goes well for you.