lets see, i have been though a total of 4 different types of front suspension and 2 rears. My sig pic was front: spindles/keys, bt sp shocks, chopped/drilled z71 bumpstops and rear: tonys springs no spacer, airlift bags, bt sp shocks, djm rear kit, sphon panhard bar. Im running a 285 45 22 tire which is 32.01 tall. My rear is 32.25 aired out, i think the the front was a touch under 32. Ground to fender lip that is.
Trust me the keys will suffer the ride quality, Id stay away from them. You could try the spindles and decrank stock keys to see if it sits were you want it to. i think you can get a 1/2 to 3/4 out of them. Depends on how your free springs sit in the back.
Tonys spring sit about 32ish some trucks lower do to spring perch mounting but not a ton. the airlift bags can be used to lift rear up as well if needed. i usually run 3-10 psi in bags helps with ride. IF you go low in rear you will have to cut of bump stop bracket from frame and add some bump stop.
let me know if you need any more info or any question ask away.
Billy