Can you give an idea of where to begin with volume. For example, I’d considered using 2PR Zones of 15 minutes and focusing as such for upper body specialization:
Two 15 min PR Zones:
PR 1: Military presses w/ chins or pulldowns
Two 10 min PR Zones
PR 2: Biceps and Triceps.
I’d do these on Tuesday and Saturday, while using Thursday as a maintenance for legs and chest which grow easily for me. This would afford the opportunity to hit an EDT upper body cyle twice per week.