I have flat towed a CJ behind an XJ and it was not fun. Slowing for a turn, the CJ pushed on the rear of the XJ with enough force to break the rear tires loose. I had to stomp the gas pedal to prevent a jack-knife. Yes, I have towed before. Yes, I have towed the CJ with the XJ and with a Ranger several times. It's not like I didn't have a clue about towing, I was expecting issues and was able to drive out of it. Stopping the two vehicles took much longer than normal. Any sand, gravel, dirt, wetness, or snow/ice in your turn radius will have the potential to cause a jack-knife.
Consider renting a tow dolly with brakes, your trip will be safer and much more relaxed. A dolly rental is much less work and probably cheaper than some sort of towing brakes installed on the towed vehicle.