Quail Coop Design - on wheels?

[CC5131]

I'm finalizing my coop plans and am thinking something kind of like my rolling gas grill but larger & taller. I'm thinking storage on the bottom (feed, etc), poop tray in the middle and caged area for birds on top (eye level). I'd like to put this on wheels so I can roll them in the garage on extra cold nights or into the shade on super hot days but otherwise plan to keep them on my patio under the eave of the house. Has anyone done this on wheels before, do you have pictures or a plan?
My plan B is to build into 2 stackable parts so they can easily be separated and moved with a little help. Your expert advice/opinions are valued.
thanks,
Chip