Springs and possibly shocks are all you really need for a 2.5" lift. You may want to move your brake lines under the frame, or get extended lines if you disconnect for off roading.
My Jeep had Skyjacker 2.5" Softrides on it when I bought it. They had sagged before I went SOA, and are really sagged now. Skyjackers warranty seems to pretty much suck too. They are some nice riding springs tho. I've heard that the Rancho 2.5" add-a-leaf (fuul length) is a decent option as well, and much cheaper.
91YJ Sahara, SOA, 4.88's, 35's, Locked