haggeling with 3 vendors

Have settled on an 8x18 cargo,drop axels,charcoal grey,32 inch rv door with windows,screen door,dead bolt,polystyrene insulated ceiling with wood lining,polystyrene insulated walls,three 15x30 horizontal sliding windows with screens,grab handle for door and an extra roof vent with screen, 30 amp electrical panel with hatch and lifeline. Bill is $6135 at trailershowroom and I sent the quote to the Cargo mate salesman and the International salesman. Should be interesting. Trailershowroom is Continental Cargo, who is a sister company to Cargo Mate. Anybody got any other suggestions? international salesman made big deal over welded hinges being better but think is not issue unless using commercially. Barn doors is our preference,we plan to add a room ac to either a fixed back door or the nose.Somebody had a nice picture of a room ac installed in the nose in their kitchen area but I can't find it .
I keep reading posts and forgetting where things are! Love the site!!!!
