Sorry to hear about your health issues, good luck there. You might consider hiring a strapping high-schooler for $10-15 to place both amps outside the cabinet and allow you to switch speaker cables. Once you decide which one you like better, get the kid to place it in the rack for you.
It's a hell of a lot easier for the kid than mowing a 1/2-acre yard for the same dough...
-RW-