[BendtheBar]

I might suggest flip-flopping Monday and Wednesday, and doing the heavy work first, then using the arms day as a lighter day. You want to do some arm work, but I wouldn't overdo it. Focus on things like close grip benches or compound style lifts that hit the triceps hardest. Strong triceps create stronger presses.

Stuff like dumbbell front raises I would drop. The front delts get hit hard on most press movements. If anything, you could do some delt pre-hab/rotator cuff moves.

Arm day might be a good day to add in heavy abs, forearms, or maybe even calves. Stuff that doesn't destroy you, but is helping to build strength.

I don't know much about strongman training itself, so as far as template structure I won't comment much more than this.