Update, did the mountain drive yesterday, ran 62mi., got off interstate and stopped without touching brakes. Drums cool to touch.
Then I got an IR temp. gun. 14mi. rural drive to work, LR drum 105*,RR 225*, front rotors within 10* OF EACH OTHER.
Other driving scenarios show RR drum allways hotter 30 - 100*, than LR. So might be something here for the close clearance/retracting.
Plan, hoses seem out of equation, or rear would be same temp. Cylinder(S), springs, yes on the plan.

Jim.