Greetings from the Olympic Peninsula of Washington
First, the question; How large can it be, before it's not 'tiny'?
I have a well worn 41 year old camping trailer; dry-rot in the structure; which I am tearing down. The interior is 7' x 12'.
The plan is to build a light-weight camper using foam-core construction; fiberglass/vinyl over insulation type foamboard.
I am a single, retired aerospace toolmaker/machinist. Love rockhounding, so do much remote, dry-camping. Have recently spent 3 weeks in OR, CA, NV, AZ, UT and CO. The trailer towed well, but needs to be lighter. I have a 2008 Ranger 4 x4.
The design is unconventional; loosely based old style Pullman car. And BTW; I'm and old hippie and the unit will be named The Paisley Palace