That is a really nice coop. You did a great job on it... Kudos to you!
I am concerned about the chicken wire and predators digging underneath. Chicken wire is made to keep chickens in, not predators out. Raccoons and dogs can easily rip through chicken wire (my own dog ripped through chain link like butter ... literally). You've made such a beautiful coop for your chickens that I'd hate to see you lose any to predators. If I were you I'd reinforce the chicken wire with 2x4 welded wire put over the outside of it and bury wire down into the ground at least 15 - 18".
If you are going to want to move this around, like a tractor, then you can attach the wire to the bottom and lay it out on the ground like a skirt. That will also stop predators from digging as they usually try digging right up next to a wall/fence.
Good luck.