Short bed truck with camper towing horse trailer?

We have a 2003 3500 S/B Dodge diesel and a (2) horse Featherlight Slant load trailer. The horses are a MO. Fox trotter and a Rocky Mt. Horse. Our camper choice was a Northstar TC 650 (designed for S/B trucks) pop-up. We did not want to deal with the expense and weight of a super hitch.

Cab over campers are almost all much heavier then their advertised weight. Our Northstar was close to 2000 pounds when it was packed. Also horse trailers have more tongue weight than travel trailers.