My opinion of "Carnage": If you value your bumpers, lower rockers behind the rear wheels and your lower door skins - you have no business being there. Additionally, if you don't have good rocker sliders you're just asking for big damage. A rear locker is a must.
As far as lift goes, it all depends upon how much body damage you're willing to risk. A rig with 3" lift, 31's and a locker could make it through - but would get banged up and strapped frequently. Ideal set up would be 6", 33's with selectable front locker and lots of armor. I'm at 8", Detroits front and rear, 35's and 1/4" steel armor parts all over - and I still managed to smash my left rear lower rocker and bash my driver's lower door skin.