PS - I have a Raymarine autopilot system, is there a way to integrate with Bob Tracks ?
That's a really good question. When I ran up the ICW, I was sailing with another guy who was really technology savvy and neither of us could figure out how to bring the Bob tracks in as a route. It's not the same as a track. We were running several systems at the time - none of them the Raymarine you have - and found the system we preferred at the time was OpenCPN. But I don't have my OpenCPN integrated into my autopilot. That's a whole other project on my to-do list...
I'd suggest that part of your preparation for this trip would be to work out how to have the bob423 long tracks at least easily displayed so you can follow them and better would be to have them integrate right into your autopilot. I feel that would make running the ICW significantly more pleasurable....
If you currently don't have either heat or AC in your boat then you are looking at space heaters. In that case you are pretty much stuck with electric. A few years ago I found a propane space heater that stated it can be used indoors without venting but I never used it so don't have first hand knowledge of them.
As you will be motoring pretty much full time on the ICW, you could potentially run an electric space heater off your boats electrical system but we'd have to talk about your house bank, inverter, alternator etc.
If you are not marina adverse (I am) then as
@dlochner says hit marinas to connect to shore power.
dj