Gypsy Traveler

We have a 2015 Ford F-250 on order, short bed. We are doing the sliding hitch.

I was thinking about weight of conventional furniture versus RV? Is there any? I would think there would be. I want to replace our lousy loveseat to a futon (because I don't think we can get a regular couch through the door). I'd get the spring futon mattress and with the frame and mattress, I'm at 150 lbs versus a 300 lb sofa sleeper. We went to a special RV furniture store, no help, no real options that fit us.