Before you do anything, change the oil. these engines are notorious for loading up with condensation in the oil from frequent & short running cycles. Change the oil & let it run- if it needs a head gasket it will run rough (with a miss). I personally haven't seen a continental engine loose coolant into the oil because of a faulty head gasket.

If you do pull the head, make sure you have the head resurfaced- don't skimp here- you'll only have to do the job twice if you do.