[RidgeRunner]

I sacrificed a midsection once to free up Reelapeelin's powerhead. Did save the lower, but that turned out to be toast too, what a PITA. I feel for you, sounds like you have a plan. Saw a guy turn his mota upside down hung by the lower with the powerhead just above the pallet below. I thought he was kinda nuts but it worked out. His theory was the Blaster he was spraying on the driveshaft was running down into the splines and working on the corosion and the powerhead was heavy enough to do the rest.
I always liked hanging the rear of the boat with the flywheel but it requires removal of the powerhead bolts, cherry picker setup and the replacement of the powerhead gasket. Tons more work but gives you lots of pulling power/leverage.