I have the Zone 4" lift for the 2 door. It's a good starting point for sure, with solid, well designed components. Retaining the factory arms with rubbing bushings was important for me and that kit allows you to do that. My Jeep retained excellent road manners and continued to be impressive on the rocks.
However, this kit (as most kits of 4" and taller) will require that you upgrade to aftermarket double cardan driveshafts front and rear. That will of course require that you install rear upper control arms to correct the rear driveline angle. Depending on where and how you wheel your Jeep, you will also find yourself wanting disconnects (non-Rubicon models) and longer brakelines. Disconnects, extended brakelines, and upper control arms will be included in other manufacturers kits, but those kits could move this project out of your budget at this time.
Hope this helps!