I had Hallmark build me a new Everest in 2010. No problems except for a fuse that went bad.
I can say that the building process was painless. Just talk to Matt and ask his advise on options. They are around it every day and know each new product which has proven to be a good one. Hallmark will do about anything you ask of them. He even installed a HDMI cable in case we wanted to watch tv--which we don't. At the last minute they made an oak door for the shower. I mean while I was there to pick up the camper they made and installed it. They are a terrific company!! all of them.
Also live in Wyoming. so if you move here don' tell people--we like it to ourselves!