I do not understand your PSA of plus or minus 10 but if you have a 3 or 4 on Gleason, that seems like good news but I suspect you meant to say 3+4 which is Gleason 7. Gleason scores of 7 are still considered relatively low-grade and rarely result in death within ten years of diagnosis.
Still, maybe you should try to get a second opinion from a medical oncologist.