If you have a garage I highly recommend taking a weekend and installing it yourself. You will learn about your jeep as well as be able to do complete job. A shop will throw everything on and wont tell anything else. If you have handtools, jackstands and a jack anyone can do a lift themselves.
I did a write up for what to check on your lift to make sure everything fits properly and how to measure for various other parts of a lift.
Direct how-to directions are all over the internet. Also you will have a great time doing a lift especially if it is with a friend. Grab some beers and have at it!