We have a 2017 GMC 3500 Duramax , SWD, short box with a 2018 Northern Lite 8-11 EXSE Dry-Bath. We ordered our camper from the factory, so we got the options we wanted, the three biggest items were a second 100 watt solar panel, no A/C, and a U shaped dinette.
I know you have said second hand camper, however with the NL campers weighing much less than stick built with slides I thought you should also consider Northern Lite on your list. Northern Lite does not make campers with slides, and our camper only weights approx 2700 lbs dry.
We added a Torklift Super Hitch reviver with a Torklift 48” Supper truss extension to haul our SXS & Trailer, as well as set of Timbren SES overload springs on the truck.
We have no issues with towing a trailer or hauling the camper on our truck. I have also hauled my son in-laws 21ft Bayliner, which is much heavier than our SXS and Trailer behind the truck and camper in the mountains of B.C. with no issues.
95% of the time we are outside the camper, so interior size for us wasn’t a big deal. We do have all the creature comforts in the camper and we have spent a number of days inside, like last summer when we were up in the Bella Coola area of British Columbia and cats and dogs landing on the roof. ( grin)
The first year we had our new camper we put just over 42,000 kms on it, with just over 2 months alone in the Yuma area boondocking, and we didn’t find the camper “ cramped” or second guessing ourselves on “ did we buy to small a camper”. We have owned different types of RV’s during our adult life, and we both started camping with our parents back in the 60’s. We went from a 35 ft 5th wheel with 3 slides, two lazy boys, a electric fire place, 42” flat screen TV, and kitchen island etc.... to this camper, and we still don’t find it to small, but that’s just us.
I made sure we followed all the weight and towing restrictions & regulations for the vehicle as well as for my drivers license here in British Columbia. When it comes to weight and towing ability, It all boils down to being safe on the road as well as making sure if something does happens on those roads your insurance isn’t null and void because you are breaking a regulation, law or a rule.
Enjoy what ever you buy.
Soup.