I guess I would say with the reefer box it is climate controlled. Encapsulated in 5" of foam, then there is the mini-split for heating and cooling. Queen size bed, full size frig, all my tools. Home Sweet Home.
Great build, are you including bathroom or just pullout toilet somewhere?
I am always fascinated by people that have the skills to tackle projects like this, can I ask your background or where you picked your mechanical know-how?