Nice to meet you Jason, Jetty and Beck. Your Excella looks spiffy with the big blue beltline stripe. You will enjoy renovating your Airstream with "reliable stuff" and then exploring our wonderful country. Steinbeck's Travels with Charlie comes to mind. These Air Forums are a great resource for every project you tackle from bottom to top, tires to air conditioner so to speak. Building your trailer for full timing may give thought to changes in its design such as improved insulation, heat reflective paint on the roof, better batteries with solar charging, larger propane tanks, 50 amp electrical, etc, etc. You can live green in an Airstream, but you want your family reasonably comfortable.
Years ago Airstream made what it called "park models". They were trailers that required water, sewer and electrical connections to function as opposed to the "self contained" trailers that operate on 12v
power. Today's mobile homes are the equivalent of the early park models. I'm sure full timing was on the minds of those early Airstream designers.