Your going to need to get your track and drag bars as parellel as possible. That will take care of part of the problem. Make sure your front and rear axles are in line, all brackets for bars are solid including the rear track bar. The mounts on the ZJ's have a tendency to start tearing apart if you put to much strain on them.
Nothing wrong with a 7" lift, but can't stress it enough - If it's done properly
Going cheap on parts at that height can lead to some very dangerous consequences. Lifting a Grand isn't the same as lifting a YJ, TJ or XJ.