Should be fine. I towed a 1998 Nash (same mfg, just not as much insulation) 22H for several years and loved it. My Tundra was a perfect match for that trailer. Weights are about the same between the 22H and the 22G. Figure about 900 lbs of tongue weight when fully loaded... maybe a little more because the sofa/Murphy bed is closer to the front in yours. Figure another 75 lbs for a good weight distribution hitch and you are looking at eating up about 1000 lbs of payload. In most half tons, that should leave you with 500-800 lbs left over for passengers and gear in the truck.
My 22H had a HUGE storage area up front under the bed, so we rarely had to carry much gear in the truck... usually bikes and firewood only.
Looks like a really nice floorplan and certainly a high quality trailer! Enjoy!!!