Hello PP and welcome to the site
My husband was on AS for a year before he then had low dose permanent seed Brachytherapy. If you click on my avatar you will be able to read his journey as I keep it in the form of a diary.
There are also a couple of other members (Kennt and John the Print) who have had the same treatment and you might find all the profiles interesting.
If you are the sort of person who can live with the thought of PC cancer inside you, then AS will give you time to suss out all the other treatments available to you.
At 3+3=6 you have the possibility of just getting on with your life. AS and its monitoring should flag up any changes, like they did with my husband.
He was 73 at diagnosis and 74 when he underwent the Brachytherapy.
He had very few problems with it, the only major one now is some ED problems, which may well be age related rather than to do with the treatment as he is now 77.
Good luck with whatever path you choose. You could, in the meantime, go to Publications on this site and download the Toolkit, a set of information leaflets on the various treatments and possible side effects. Or you could ring one of the specialist nurses and ask for a hard copy to be sent to you.
Best Wishes
Sandra