Currently laying in bed next to the wife in my 2017 181BH. We bought it thinking we might tow it with our 2015 Dodge Grand Caravan, but knowing that it was likely we'd want a bigger tow vehicle (my car is a 2004 Pontiac Vibe that was ready to be handed down to the oldest). Although we were under all specs except frontal area it only took driving home to realize the bigger vehicle was necessary. Just got done with our first trip out, 1100 miles from NE Ohio to Cedar Key FL, the truck did a great job and was very comfortable for the four of us. One big thing that the van wasn't going to be able to do is carry a WDH with anti-sway (not enough cargo capacity on the rear axle for 150+lbs on top of the tongue weight). If you're dead set on trying this combo seriously look at the Anderson no-sway as AFAIK it's the lightest WISH with anti-sway.
Btw the 181bh vs 19BHS isn't just a name change, it's a pretty big change. They added 3" of interior height (super important to me as I'm 6' 3" so hit my head on the roof AC in the 19BHS), power awning with LED lighting, outdoor speakers, and a few other things I'm forgetting.
Oh and the dinette in the slide is great because it's big enough for 4 adults to sit comfortably at, something we didn't see in any unit without a slide (the oldest is 6' 170, a bit bigger than the wife, so the little dinettes were a big minus for us). Those 'small' bunks are big enough to fit me at 6'3" 250lbs with a wide frame so I'm pretty sure they'll fit 99+% of kids.
