welcome to the forum and good luck with which ever way you finally go,,, My humble opinion is ,,,, Make the build a total family project,,, put the kids to work and let them be a part of creating your trailer and then they will enjoy the trip next summer even more,,, Just think when some monster motor home person comes up to take a peek and ask did your daddy build it ??? just watch them poke their chest out when they say well we built it but daddy did help us,,,, The trailer will be something the whole family has pride in not only ownership but building,,,
go for it,,,,,,,,,,,,,,,,,,,,,,
chipper