Alternative medicine is really big in the pacific NW. I'd suggest Eugene, OR or Seattle area. I've visited 47 different states during my travels about 10 years ago. My gut tells me you would like Spokane, WA.
The east coast (anything east of the Mississippi) is generally to be avoided unless you live outside of a city.
There are a lot of places I would love to live in, but the whole point of moving is to find cheaper housing than we have now!!!
Renting or buying? I can't watch the video until after 2 am (out of data)...
Buying!
Have you considered buying land without a house on it (buy an RV instead)? If it isn't attached to the land, it can't be taxed.
I'm not sure that would be enough room for 5!