Your list of carried power is certainly adequate. Having the generators to fall back on is probably overkill. Conservation is key as you say. My thoughts were more focused on the "walking evac" scenario where you will be carrying whatever you need for a potentially long evac / shelter situation. This is probably not something you prepare for since, as an EMT, you will be stuck in the thick of things and your gear will be supported by whatever support that there is. I am also an EMT and involved in ARES locally so one way or the other I will be working from whatever public supplies are available and it is more important that I have the needed tools than that I worry about carrying backup power for everything since I will probably be able to plug into the rig's power supply if I am doing Comm's or the Ambulance if I am operating as EMT. OTOH, I do have a "walk out" BOB for the occasion when I may be in a situation that is not my area of operation and the locals don't consider me part of the team. (somewhere out of state). In such a situation I become one of the dependant PHRASECENSOREDPOSTERSHOULDKNOWBETTER. with a few extra skills and a bit of gear. In those scenarios I want the BOB to contain only 1 type of battery so that I can cannibalize between the electronics easily to get the needed piece of gear working. If I had to pack out all the batteries you mentioned I wouldn't have much room for the other gear nor would I want to be carrying all that much weight in power.

Just some thoughts.