There is an 18 ft Burro
advertised on here that claims to be 1200 lbs - I asume that is empty and dry and a low ball estimate. It has no bathroom but u can do with a porto potty if u camp in campgrounds. The goucho in the front can be the baby's bed with one of those guard sides you slide under the cushions. And if the front goucho has a lifting back, you'll have bunks when the next baby comes.
I got a 16ft Casita
with bunks front and side ao we can sleep 4 and leave the dinette up all the time. It feels both cozy and roomy. The Casita
is heavier than the Burro
(at 1600 lbs empty,l partly because the walls are carpeted. The Burro
walls are smooth, washable fiberglass. Glad it didnt come on the market before I bought mine las fall
or I would have given up the extra 2 bunks for the maintenance free walls inside and the wider body.
If you think you are going to be on the edge of the limit when towing, dont get a bath, dont port any water or wood, and dont carry heavy things like cast iron pots. Good luck!