Recommendation needed for first camper trailer

Looking at chevy ordering guide shows the 2020 ZR2 has a 3200 RAWR and may weigh 2100-2000 lb on the rear axle leaving approx 1100-1200 lb payload on the rear axle. The ZR2 diesel take a big hit on towing performance.

Here is a BH from Allen Campers https://www.allencampermfg.com/upload/215%20BH%208.30.pdf that has a 5000 GVWR and dry is 3375 lbs with a 1625 CCC. Bought my first 8' then a 9.5' truck camper in '72 and '76 from them.