I will be getting a Rubicon Express lift kit in order to run 33" tires. Will be going with Pro Comp 7031 wheels (15 x8) and Duratrac tires. However, the Rubicon Express 3.5" and 4.5" are the same price for the Superflex kit. It would be nice to have the option of running 35's later on (maybe with a 1" body lift), so wondering if it makes sense to get the 4.5" lift immediately? Any drawback to going with the higher lift, either in performance or extra modifications needed?