I pull a camper that's rated at about 4800lbs empty with my Chevy 1/2ton 5.3L (350ish) w/3.73 gears, no problem. Tack on a full water tank, and all the stuff the wife and kids pack in, I'm sure actual weight weighs in at as much or more than your cherokee on the trailer <img src="/forums/images/graemlins/smile.gif" alt="" /> The 1/2 ton should do you just fine.