May take you an adjustment or two to get it dialed in just right, but my 40 footer which has 3400# of pin weight drops my 2019 F350 DRW to where the truck is essentially level. I measured the drop once from center of rear fender arch to the ground @ center line of rear axle, it’s been a while, but I seem to recall that was about 2-1/4” of squat.
Might be helpful as an assumption of where to start.
Nonnie & Poppy
2016 Keystone Alpine - 2019 Ford F350 DRW