Anti roll bars will help stop the springs dislocating but most remove them for the extra articulation you can get from the longer shocks. The overall shocker length has a lot to do with whether the springs 'pop' or not.
Some kits quote 2" but the shocks are not extended enough to make use of the extra travel hence the springs don't 'pop'. One company . . . who will remain nameless on here for obvious reasons . . . are notorious at quoting lift figures, depending on the tyre size you want to fit. be carefull and be sure the shocks are extended to suit the springs. Also consider longer bump stops if you fit larger tyres.
Personally i'd say fit longer shocks/springs, rip off the roll bars and put rear cones on. That should get you going. I cant see the sense in fitting the longer kit and then purposely limitting the travel by stopping the springs from dislocating . . . waste of time and effort unless it's just for the posing and looks.
Don't forget biger tyres as well . . . . vehicle will look like a skateboard with standard wheels and a decent lift