BUT WAIT !
There is more ;)
Running bigger than factory #10 wire to camper would make sense when you have 6-battery bank, but rule of thumb says you should not charge the batteries with current bigger than 10% of their capacity.
So 100 amp-hr battery should not be flooded with more than 10 amps.
Ford is the only brand that is having trailer 30 amp charging wire operated by ignition, so check if yours might already have it.
Bigger wire with bigger connectors might make sense when you use 12V for fridge, but sounds that you might already have all you need?