As an Oh-by-the-way I did weight mine on a cat scale, basically empty she had 1,144 tongue weight and 6630 on the axles =7,974 Total. Not an issue for towing but would be interested in what yours scales out as. I'm using the Andersen WDH and mine tows every bit as good as my 37 ft 5er. With my 07 5.9 CTD I get 13.5 or there about towing. I think the newer Rams get even better. I tow at around 62MPH, not that I have to but prefer to.
2015 Salem Hemisphere Lite 272RLIS/ Prodigy P3
2006 Heartland BH 3400/Summer Home
2007 Dodge 2500 CDT QCSB/Andersen WDH, Maxxis 8008 225 x 75 x15 LR E tires/J T Strongarms