No reason whats so ever why you cant get your leaf sprung 4x4 to drive as smooth as a coil. If a shorty the ride might be a bit heel toe. but a GOOD shop will get it to flex and do all you want. Wish I could find some old pics that would put a few here to shame. just go to a proper shop get them tailor made not off the self rubbish. Dont forget anti inversion and greasable shackles the right material for the bushes, huge difference. Might be better putting airbags in the back for load carrying