I thought I would report back on my air shocks.
I had the biggest load I've had in a while. Roughly 600 pounds of concrete, all of it sitting behind the rear axle. With 100 psi in the air shocks, I was about 1" off the bumpstops. This is with 3" truck lowering springs, which brought the panel down about 5".
I took it easy getting home, but it wasn't bad really...
