If you plan on moving Chippy to a cage you already have ready for her, you can do the all the "remodelling" to better suit her needs before allowing her to move into the cage.
If you plan on transporting her on a small travel cage and will be inheriting Chippy's bigger cage, then you can make all the changes needed (you may even want completely clean and wash the cage) before placing her back to the cage.
Since she will already be going to a new home and environment, she will necessarily go through the required adjustment as she takes the time in settling in to her new home.
You can help this process by covering Chippy's cage on 3 sides (leaving front part uncovered) and having some background sound from the TV or radio to help her feel more at ease.
This link has good suggestions for "decorating" the cage: https://talkbudgies.com/housing-budgi...reat-cage.html
As for the nail trimming, depending on the length of the nails, you may really need to have this addressed by the avian vet specialist.
It would also be a good idea to take Chippy for a general health check-up at the avian vet.
Best of luck with everything and be sure to post some pics when Chippy is all settled in your home!