"This may sound like heresy to some, but I don’t agree with the old saying of “You can never have too much truck”. Actually you can. I would rather haul my camper on an “overloaded” (wink, wink) F450 pickup than an F550 that is sprung to carry 2-3 times as much weight. Lightly loading a heavy truck like that is what ends up making a Link air ride system look good."
I max out my F550 with either dirt or boulders about twice a year...and for about a month I carry enough sand / equipment on it to have a decent ride. Other than that, the ride will beat you to pieces. If I had to do it over again, I'd probably end up with the same setup, but would have to look long and hard at the 450 pickup model.