Not trying to answer for ezra---But be sure you get stainless steel hardware, 15 inch tires and wheels (radial tires-aluminum wheels), LED lighting, Advantech flooring or the equivalent, salem side vents, two fuel doors, spring assisted doors with double cables, electric brakes on both axles, one piece aluminum roof. I had two front ramp doors put on mine so you can load or unload from either side. I did not want spring covers on mine. They look nice, but you can't get to your springs very easy to lube the moving parts. I also had them solder all electrical connections and heat shrink wrap them. I also had an all stainless steel screw and fastener package. I put in a 30 amp 120 volt system with four receptacles and two fluorescent lights.
I hope a few of these suggestions help when you are building your trailer. NEO is a great brand and build a quality trailer.
Sorry if I hijacked ezras thread.
Good Luck on you build.