3 on 1 off? Thats 89 workouts per year, versus 59.3 workouts per year on a 5 on 1 off. I myself prefer a 4 on 1 off, or HST, but I like to go back and forth if HST is used.
Not everyone may agree with x/workouts per year, someone knowlegeable in the industry does, and I know I have always prefered more frequent stuff. I think though as you get VERY strong, you will probably have to slow down. Many powerlifters dont workout the same bodypart even every 8 days, and doing such is considered "crazy" due to the danger they face.