Yobiks,
Sorry to welcome you into the club, but you've come to a good place for advice on PCa.
I agree with the other posts that suggest a second opinion on the biopsy.
Not knowing much else about your situation its hard to comment on your decision to do surgery; however, I also agree that you might want to give consideration to other options (AS, Brach, Focused treatments) if you haven't already. I say this because surgery can have some side effects that can be tough to live with. There are more than a few guys that end up with incontinence or ED ...... and its hard to run in a loaded diaper.
If you stick with surgery, I would recommend doing a lot of kegels pre surgery. I think they helped me a lot.