Have you just had the one PSA test? I would get that number confirmed with another draw. There was a pretty good paper with data in determining the likelihood of metastatic cancer at various PSA numerical points. Do a google search and it should show up.

It could be that your PSA is high for other reasons and you have to take into account the size of your prostate. If it were me, I would likely do radiation if higher than say 100. Under 100 and given your age, I might consider surgery.

I wish you the best.and stay positive.The treatments at all stages now are doable.