Back with more thoughts. I was Parks and Rec for Palm Beach County FL for 6 years so this is something I can sink my teeth into.
Consider a toy hauler - would allow the walk up, walk in, display space when you want it and convert to beds when needed, or be able to haul some of that Rec gear (because you can never have too much stuff). How many people need to sleep in it?
If you can wait - go to the Halifax RV show in January and look at options - walk through, look at construction and have a checklist of needs/ wants.
Parks will pay more upfront for a MFG like a Bigfoot
, but likely experience less maintenance issues (and costs) in long run. How will it be winterized and stored - or garaged for year round use?
Have you considered two campers (one for shows, and one for the Learn to Camp program)?