~ Desmond you WILL not over train, the front delts will effortlessly take the load do to ALREADY being tired from the previous Chest Lifts
~Use a Neutral Grip ( normal ) and Just press!

and press till Burn out.
~ON the back day you will get extra Trap development and side deltoid do to how the exercise flow.
~If anything in part 1 your rotator will get STRONGER or heal if previously compromised