I also have a very similar tow vehicle as your grand Cherokee, the Hemi durango and I got the 23ws. Like I just mentioned, I just took it to the CAT scales. The brochure tongue weight for the camper is 500 lbs, so I estimated we would be between 650 to 700 lbs fully loaded, the loaded weight scaled at 640 lbs. That is with an empty fresh water tank, so if we need to travel with a full water tank, the tongue weight would be a heavier.
We also seem to be light packers, we put less than 500lbs of stuff in the camper, but most of the storage in this model is behind and over the axles.
We are getting very excited to get this out to the woods in two weeks!!!
Good luck searching for your perfect camper.....and ask lots of questions, the best decision is an informed one.
HTT: "EscapeII" 2016 Shamrock 23WS (current)
PUP: "Escape" 2010 Rockwood HW 277 (gone)
TV: "Bruce" 2011 Dodge Durango V8 Hemi Crew
Just us gals (me, Sis and our daughters)
Traveled 19520 miles and 209 nights in 7 years and counting