I would recommend getting an energy management system from progressive industries. It monitors the power at the pedestal and if anything happens high-voltage etc. because of some fault in the underground cabling The Progressive Industries unit will cut the power to your trailer. Get the best one that you can find. It is cheap insurance compared to the appliances that could be damaged if there is a fault in the pedestal.
I do not repeat do not recommend your freezers be on a GFCI circuit. They are very sensitive units and if it would trip your freezer would shut off.
You may call me if you wish and we can talk about a lot of other things as well.