Calling Dirk is a good idea. He will ask you questions in order to estimate the weight of your Jeep. Then he can recommend the appropriate front and rear springs for your desired ride height.
Also, 33s really need 3.5-4" of total lift. There isn't an OME coil out there that is adequate for 33s without a small body lift. Even then, it is only barely enough if you get the bump stop and shock lengths right.
The OP ordered the Ultimate kit which comes with the JKS BL and a MML, so he is on the correct path to fit 33s with that kit. No other items would be required outside of that Ultimate kit.
Of course this now brings up gearing once you add those 33s.
