Cargo Trailer Conversion

I currently have a 6x12 V-front cargo trailer that I converted and use for a camper. Biggest disappointment is I didn't anticipate the wind resistance above 55 mph so my idea of a lightweight hard sided camper went astray. I went the cargo trailer route because of the shoddy construction of small campers. For most of the manufacturers to get under 2500 lbs and still include all the amenities of a larger camper they sacrificed quality. No metal wall to wall frame, cheap wood framing, thin mattresses, etc. I have the side rv door and back barn doors. I got barn doors because of adding windows to the rear. I put in 5 windows and fully insulated with foam insulation. I have 6 double LED lights down the center that when all on my wife calls my stadium lighting. Too bright for her. We do all of our cooking outside and if the weather bad we have a table inside that we use our lawn chairs at. I used 2 of the Rubbermaid upright cabinets for our pantry and storage inside and a 3 drawer one for clothes storage because they ate extremely light and strong. I put bunk bed in made out of some type folding beds we got at Kmart that have a metal frame with canvas stretched between springs. Then a 4 in mattress on top. Much more comfortable than the mattress laying on plywood. Loaded with screen house, battery, food, 5 gal water, stove, barbeque, clothes, Mr Buddy heater and assorted stuff it weighs about 18-1900 lbs. It's pretty much what you are describing you are building. A clean dry place to sleep no matter what the weather, outdoor living and a easy way to haul everything for camping with out having to load and unload the vehicle all the time.