Save up cash, do it right once. Cheaper in the long run.
A 4" SUSPENSION lift will make room for 33" tires. To do a lift right (on a TJ), you need at least new lower arms and probably new uppers, track bar relocation for front and rear (or new track bar is better), new shocks. Shortly thereafter you will need a fixed yoke kit for your tcase and a new driveshaft.