We have a Dutchmen Lite 25 ft with a slide. Dry weight of 5000 lbs, 6200 to 6600 lbs loaded; according to the CAT scales.
Our tongue weight is 700 lbs. Our TV payload cargo capacity is 1400 lbs so we have about 700 lbs to play with. Doable, but with two adults, a dog and gear we are at our payload limit.
Our towing capacity weight with WD hitch is 9500lbs. Like most TV's you run out of cargo weight before towing capacity. While you can beef up the suspension to improve the ride, it will not increase the axle or cargo rating of your TV.
If you are committed to a new TV as well as new TT. You could see what the new combination rides like compared to your current combo.
