Bad thing about boo boo buses are they are driven really hard. You are right about the inverters, they connect to either shore lines or they charge 110 while running. Scene lights arent too bright. Most will have plenty of storage for tools and they all have at least one lock box. Also plenty of room on the outside compartments for tires and such. But watch out, one of our older ones had an alternator go out and they don't make them anymore(they are extremely high output) it cost about 1500 for a new setup. Also the schematics of those things can be confusing, most mechanics won't touch the "box" parts of them. I would look for the mod-van ambulances
They have all the perks of the bigger ones without the fix issues. Plus they go a lot faster. About 120mph compared to 92 on the big ones.