Hi Graham,
The most important thing to realise is that you have plenty of time to read and research as much as you would like before you make a decision.
I have been talking to men on this site and at my local support group for the last 9 years.
Lots of them have had RP, their cancers appeared to have been cured, and they went away happy men.
Others have had RP, only to discover that the PCa has hung on in the margins of what's left after PCa, it's come back and spread etc.
Others have made an instant decision to have RP, and then after they have been left incontinent and impotent, have researched the matter and concluded that they may have lived as long, and would certainly have lived happier, if they had not opted for RP.
Yes it's confusing, but if you read enough it should become clearer.
AND things are changing, if you look on this website's front page under latest news you will see 'Long-term study shows active surveillance offers same 10-year survival rate as radiotherapy or surgery'.
So it might be that AS is a better bet for you than RP?
Certainly AS will not effect your ability to enjoy erections, whereas you can almost guarantee radical treatment will make sex a distant memory.
One thing you can do, that carries no negative health risk whatsoever is change your diet, avoid dairy, drink green tea, eat lots of turmeric etc might be just as effective as RP or RT. Some dismiss diet changes as a fad, but many doctors swear by them. I took note and changed my diet 9 years ago, I had a PSA of 30 now its down to 0.2.
So as its September, imagine you are going to University, between now and Christmas you have time to read more than the average university student, and it is worth putting the time in, because all of that extra reading may very well save your life.
:)
Dave