Zone looks to be good, and a friend runs the 4.5" on his XJ. Main issue is although it has replacement lower control arms, you're still going to need front and rear adjustable trackbars. You may get away for a little time running a bracket on the rear, but they're not going to hold up long offroad. Count on spending over $300 for both trackbars. In addition, you'll probably need to replace bushings on the upper control arms (or just get replacement adjustable arms $$$.)
It's very tough to find a good compromise when lifting the ZJ. If you want a new 4" + lift and want it to drive decent, you're going to spend upwards of $1000. You can shortchange this all you want, but in the long run you'll only spend more. I inherited a fairly decent Rough Country lift that's on my 5.9. I've since replaced shocks ($280,) sway bar bushings ($20,) added a double sheer front trackbar from IRO ($180) and still need to replace lower control arm X-Flex joints ($180.) I'm approaching $700 on upgrades for a short arm lift. If my uppers go out (and they probably will) then I'll need to add another $180 for more currie JJs.
WARNING: Lo barato sale caro (Cheap things often lead to more expense)