This has been asked and answered many times before.
Give us more details:
What currently gives you the lift? (AAL, Shackle, New Coils, Spacers, etc.)
ZJ coils give ~2" on lift over the stock XJ coils, and if you didn't to AAL in the back, do a shackle, and vise versa (however new packs would be the best options)
Coil spacers up front are easy to add and offer same as stock ride and handling.
Keep in mind you might have to get extended shocks, depending on what length you have in there now.
Also, when approaching 5" you want to look into a SYE, and additionally a longer driveshaft. There is several options for these, depending on your transfer case.