Build me a solar setup

[larboc]

Also, don't underestimate the cost of racking.

 

[CarterKraft]

I want to run the 5th wheel, minus the ac units.
Thats what has been recommended by the local guy

The trailer has two batt on-board

IF you only run the trailer sans AC you don't need anywhere near 4k watts.
I run my trailer, all my electronics, the inverter and ice machine in Colorado on 400w.