Later I learned through independent research that the close margin puts me at a little higher risk for recurrence than someone with margins with more wiggle room.
Perhaps this will make you feel better - from Epstein himself:
"Dr. Epstein completed a study of patients whose tumors were particularly close (less than two-tenths of a millimeter) from the surgical margin. Even though there wasn't a comfortable cushion of tissue between the tumor and the edge of the prostate, those patients did just as well as patients with more separation between the tumor and the margin."/www.hopkinsmedicine.org/brady-urology-institute/specialties/conditions-and-treatments/prostate-cancer/prostate-cancer-questions/understanding-surgical-margins-after-radical-prostatectomy
If you can spare a little money (a few hundred I think), Epstein is sure a good source for a 2nd opinion. I did that and am glad because he found my margin was GS 3+3, and the post-prostatectomy pathologist had not bothered to state that. So now with my low-level, but seemingly stable, uPSA, I feel a little better holding off on SRT.