Leveling kit would be to lessen the take of the truck currently. It has brand new rear springs and 2 year old front springs but still has a healthy rake to it.
To racap-
Stock sized truck and trailer tires
I’m guessing at the needed frame size for now
Even if I install a 6” subframe I might only touch 11 foot high at the top of my ac unit.
The camper doesn’t weigh much but would have proper bracing/gussets and the subframe would be longer than the current mounting point of the suspension mounts
I was hoping someone that’s done it or something similar would chime in, seems all the threads I’ve read previously are around 6” subframe some more others less.