Well with 5k.
I would start the build on my survival camper trailer.
1. M100 Military Trailer $900
2. 4-man Autana XL Teoui Roof top tent $2,250.00
3. Honda EU2000 portable generator $900
4. 1: steel tube $400
5. Random other BS $550
Basically building this to pull behind either my dad's 1941 or 52 military jeeps.