Whoa...slow down! You have found an extremely tiny amount of PC...there is basically no smaller measurable amount. Are you having any symptoms? I'm wondering what's your rush into a aggressive treatment?
Do you realize that roughly 50% of 50-year olds have asymptomatic (no symptoms) PC based on autopsy studies performed on men who died in accidents? Roughly 60% of 60-year olds, 70% of 70-years olds, 40% of 40-year olds, etc, etc. Comparing their small amount of PC to others, doctors indicate that the vast majority of those men will never have had symptoms and would have died with, rather than from, their PC. Treatment is clearly not needed for everyone, and men in the very low risk category (like you, based on case characteristics you have provided so far) are encouraged to (in the words of world renowned urologist/surgeon Dr James Eastham from Memorial Sloan Kettering) "wait and see what this cancer will do."
PC is generally slow growing. You have a extremely tiny amount, and there is absolutely no reason to believe yours would be anything but slow growing, but the way to find out is to proactively monitor it to see if it later become warranted to aggressively treat it. In the mean time, you may want to consider the evidence that men just like you (biopsy-confirmed low risk PC) who participated in a study at the Univ of Calif at San Francisco reduced their PSA as a measure of PC progression just by changing lifestyle choices. They pursued this approach with the knowledge that the outcomes of men with low risk PC in another study who deferred treatment until there were signs of progression outside of the low risk category were the same as those who sought immediate treatment.
There is gross over-treatment of men with low-risk PC in the recent past, resulting in severe side effects that could have been avoided. Men with very low risk PC are strongly urged by today's best-informed clinicians to "wait and see..." Be wary of any clinician seeking to rush someone with low risk PC into aggressive treatment, and be sure to treat your actual disease, not your fears.