We have the same setup - 2016 megacab dually & a '16 811. We're probably coming up on 50k miles with the camper onboard - you'll be fine. We're out for months at a time so really love the extra space in the truck for storage. If I had to do it over again, I'd not get the factory air suspension. I think the new trucks level side to side, but ours doesn't, so we're always riding lower on the right (slide) side. We had a sway problem also, but Helwig came out with a sway bar for the air suspension trucks and that made a huge difference.