In my humble opinion, wait. If it ain't broke, don't fix it. Not every 3.6L Pentastar is a POS. My 2013 has about 60K miles on it with no ticking (except on a cold start up after sitting for a couple days), no oil cooler leaks, and no radiator leaks. Could any/all of that still happen? Maybe (did I just jinx myself?).
As a side note, If the Jeep has been sitting for a few days, sometimes I'll crank the motor for about 5 seconds to let the oil get back up to the top, then start it. (If you floor the gas pedal while turning the key, it will crank but not start.)