I’ve got a little flick book of Adolf making a speech probably a propaganda thing and when I showed it to a antique dealer years ago he said I should be wary of who I showed it to as some people would just rip it up
I would still go for a double axle chassis in case you did ever need to move it moving that would be a nightmare it’s not going to be balanced like a caravan and it’s going to be heavy just a thought wilf