Getting Batteries and Propane Off Tongue

I added two golf cart batteries into a sealed and vented box inside my trailer, close to the axles. AGM batteries will be more conducive to bringing inside but are also more expensive. AGM can also be installed in a horizontal attitude, should space be a consideration.

The propane cylinders can be up graded to a larger cylinder, as mentioned. There is little reason to adapt to a new tank and replace existing propane distribution. The difference in tongue weight will be marginal.