[cypher]

Some will get a bit stressed by a big change like that but far better to be a bit stressed now & have a good wheel in the long run rather than avoid doing it.
You can make things easier by not doing any cleaning other than essential spot cleaning for a while before & after & putting all the old substrate, nest & even hoard back in after you change things around, it will be a lot less stressful that way.
They usually grow out of flying out of the wheel but if he is still doing that then it is important to make sure he has a safe soft landing so I'd just go ahead & make the necessary changes.