Instructions here. This is a 2.5" kit. You can get it in a light or heavy spring choice. The heavy spring choice will be firmer but get you more nominal lift height. If you are on a budget, and want to go to 33" tires, you should do a 3" kit or the
Zone Offroad 4.25" combo for example. I have sold tons of these over the years. The 4.25" combo has a 1.25" body lift on top of the 3" spring lift. It also has a 1" motor mount lift to help compensate for rear drive line angles. If you are considering the 4.25", get the hydro shocks for 95% street an the Nitros if you plan on running it hard on the trails.
The rear trackbar relocation bracket will, in theory, recenter your axle under the frame from side to side. Adjustable TBs are prefered but not neccessary on the rear. The front you should have an adjustable front TB if you get above the 2~2.5" range. Prior to that it is tollerable to run without one. I would not do a lift without a front adjuable TB. But that is just me. Teraflex makes a good Adj TB. so does, Synergy, Superlift (at least the JKs are). JKS is another popular one. I have sold a ton of the RE1600 from Rubicon Express for the TJ running a 3" lift height. Very nice for the price. Make sure with any TB, you torgue it properly and after the rig is sitting on it's own weight.
Now, please give us the details of your vision for this build. You will get better advise and guidence with that info. Be detailed.
Allen