Do you want the whole sermon or just a short answer ?
Short answer is for 2.5 - 3 inches either the OME or Ironman lifts are good.
Forget Rocky Road / any type of spacer lift
Frankenlift you're going to be at 4 inches until it gets broke in and will more than likely also need JBA upper control arms
NOW no one cares if you ever go off road or not, you're upgrading the suspension so on the road every day / every mile its going to ride better, handle way better and will be so much different you'll love to drive it everyday. RR crosing that you slow down for now you'll float across after doing a full spring lift.
Now for cost 775 on up plus installation thats for a full spring OME, plus a couple more inexpensive additions.
As far as 4 wheel drive shops go......most know more about wheel barrows than they do lifting a KJ or KK
If you want the straight facts here we are ask away
Check out JeepinByAl lifts from 700 all the way to 4 or 5000
Now for the whole sermon tune in to 102.5 on your FM dial every Sunday morning
OH and Welcome to LOST