that is a basic all around kit that will get you headed i the right direction. are you doing the work? how are your skills? you can get 4.5" lift by performing a spring over in the rear.
longer brake lines needed, adj track bar or relocation bracket to keep stock trac bar, tcase cross member drop spacerz, shocks of proper length, bump stops, steering link upgrade, pitman arm drop pending steering choice setup, bigger tires means less performance with out gear changes in the axle. bigger tires means more leverage on components causing more wear of old and weak partz account for that.
best to save money for decent kit components and quality shocks and control arms. long arms, adj ca, or fixed ca as in the kit posted but be most beneficial with lca drop brackets and this will help with ride quality. but what are you after, trail rig, road warrior, weekend warrior, mall crawler. make a plan for what you want to do with your jeep and how big of tires you want or need. then build for that.
if just want something more now with a good stance and short on funds, then i suggest a 3" lift with some 31s. then go from there. search around and check what others have done and plan ahead to not waste your money.
enjoy.