First: PC is cancer and is serious. And, what treatment you choose is personal and based on many factors in your life as well as your condition. I am NOT a doctor.
I read about
half the replies and it sound like advice and you are approaching this in a methodical way. GET A SECOND OPINION.
My doctor said I needed a RP within 6-8 weeks and of course, he was the surgeon. I got a second opinion. The diagnosis was changed to Gleason 6. The new doctor gave me an 18 core biop and found about
1/2 mm Gleason 6. He also did the MRI thing which the first doctor did not do. He put me on AS every six months. It has been almost five years. My PSA has ranged from 2.4 to 5. Currently it is is 3.6. The few high numbers were most likely due to a prostate infection. I have had a few over the years.
If you go with AS, don't hesitate to see the doctor between appointments if you have any issues, symptoms or anything that makes you think there is a problem growing.
Looks like you are from Oregon. Are you a Beaver or a Duck? You can't be both.
Good luck from a Pac 12 friend.