A couple general questions about travel trailers

I want to clarify that 30 A is ONE 30A breaker and that 50A consists of TWO 50A breakers so it is a lot more power.

My brother lived through a few winters in Michigan In an old Holiday Rambler. He had to add good quality weather tight skirting, heat tape on ALL pipes over wrapped with insulation and burned a crappload of propane.

You can get an external 100 pound tank added.

There is a type of trailer called a park model that does not have holding tanks and is designed for four season use.