Hi Jim to answer that we need to know a lot more... there are lots of solar work sheets online to calculate how much you will use in a typical day... but I feel that 55 watts is nothing more than a maintainer... running your fridge on propane requires a constant power source... then there are all the other little draws.. elect ignition for the water heater, radio memory, etc etc etc... and this is not even thinking about TV in the evening.
Here is a link to a fellow that has forgotten more about solar than I will ever know.. he loves to talk about it... so check his web site then call him if you have questions...
2004 Chev Silverado Duramax optioned past the max. 2009 Jayco Eagle 308 RLS 765 watts of solar, 6-6 volt batteries (696 amp hour), 2000 watt (4000 surge) whole house inverter.
140 days boondocking in 2016
211/2015, 196/14, 247/13, 193/12