I like how it looks, just a few things I would like to say;
- ramps? Chins don't need ramps! they hop and jump like crazy for a reason!
- screws! screws everywhere! Ok, they are sunken in (or however you say that in english, hope you understand me) but once they start nibbling the wood they will get to them fast. Glue > screws
- mesh wire? That's nice for a cage for young chins, older chins i would prefer bars. Why not the wire? When you have direct lighting on it, it makes the metal reflect it and it makes it a pain to look trough. If I would buy a cage like that I would change it (or partially at least) with glass or even plexi glass.
- thin backside board. Can't say thgis otherwise but pics show the backside of that cage is pretty thin, and allthough its flat and even and you may think your chins won't chew it, they will find a way. Once they do, they will chew a hole big enough to squeeze through in a matter of hours
All in all I really like the look of it, and its nicely made, but I am sure it would be a better idea to just go and buy a secondhand closet and turn it into a cage yourself. All it takes is to find a closet, remove the door panels, put something in place (plexi/glass/...) and hang some shelves, wich is easy to do. At that point you have full controll over the used products (and avoid toxic stuff), you can use glue AND most important you can decorate however you want to.