Sounds like a neat idea.
Odors, and wood stoves kind of go together, for me I like the smell, however it may not be what your clients want, so propane is going to be better in that regard. I am using propane for heat, cooking and hot water. There are propane furnaces available for RV's that the exhaust is vented outdoors. An oil furnace would be another option, might even be a better one for full time living.
roof raise, hard to live in it and do that. Might suggest get a bus that has a higher roof. Seems most buses are around 6 ft headroom in the center, but there are slightly higher ones with about 6 1/2 ft headroom . Maybe that is high enough, if so it sure saves a lot of work.
Power, a Kill- A -Watt meter can be had for around $20. I bought mine from Amazon.com . The meter plugs into your outlet, then whatever you want to test plugs into it. It will give you a much better idea of what you are using. Best to do a days work and record what was used for a day on each item. Something like the iron will use it's 1800 watts while heating, however once it reaches temperature it will cycle on and off, so the meter will give a much more realistic power usage.
I think it is going to end up taking a fairly large solar setup to do what you want, as well as the batteries to go with it. There are others with much more experience on solar then me, so I am just going to leave it at that.