That's good if the bar chewing is settling. I would suggest getting a hanging rat sputnik as well to hang next to the shelf - it gives some overhead cover
https://www.amazon.co.uk/Savic-Ferre...3610166&sr=8-2
Cage looks very nice
I tend to put the wheel at the back of the cage so you can have another shelf or large house on the end opposite the shelf. But it may not fit if the green shelf is too big to allow it to fit.