Sadly I think the shelf is just a tiny bit too high up for the wheel to fit on it.
I was originally planning on building a 25cm wheel into the cage itself (on the side of the storage area) but because of the time restraints and problems in manufacturing I didn't manage to and I didn't really consider putting a wheel on the shelf when designing (partly because I was initially designing for my Syrian). I might make a very tall/deep wheel stand so it is stable but I can put a lot of bedding in.
I'm also going to work on a better bottle holder
I had a last minute realisation of "I have no way to put the bottle in!" because she was in a barred cage before.