Those are good numbers for stability. I have about the same on myt '90 w/33 12.50's. With the added weight of the shell, carpet kit and tools, I have an almost 50/50 weight distribution. With poly sway bar bushings the thing handles better than most cars I have driven.

With the 3rd gen rigs SAS'd you can run 37's w/hi-steer(or X-ver), with only running the rear Toy springs up front, when you move the axle 2" forward. This is what a buddy is running on his '92 with cut fenders. At full stuff the tires rub a little, but not enough to be concerned with. His rig has an entry height of about 4" lower than another buddy's '86 Runner with the standard SAS hi-steer, lift springs, and 35's. The runner is also a lot less stable on the trail.