SIL has relatively small bunk that has 4 bunk beds, a queen, a hide a bed, & dinette that can convert into a bed. Sleeps 8 to 10 in a pinch. Fully loaded with water to boon dock it was 8k. Wide axle WDH set up by CAT scale it towed well behind my half ton pick up.
http://www.coachmenrv.com/travel-trailers/freedom-express-liberty-edition/292BHDS/225
You could tow this comfortably AND passengers with a full size window van. 3500 reliable 6.0 (341 HP 373 TQ) with best gearing or the little diesel when tuned. (220 HP 440 TQ) the little diesel would move it easier but the gas would be faster bigger difference would be the lil diesel would provide dramatically better mileage.
https://www.chevrolet.com/commercial/express-passenger-van/build-and-price/color
