Get one of those time machines like in Napoleon Dynamite, go back to when you were buying the 4Auto and make yourself find a 5 speed (or 6 speed with later TJs
Kidding. Regearing is good, too.
I dunno what TJ 4Autos are like, but the friend's YJ 4.0 I6 I drove in the mid 90's had this "Vampire" 3spd Auto -- its like all the power from the bigger engine was just sucked away by that transmission. Hope the TJ4auto on the 4cyl works better.