Well, erm... First, check the size of the rootfs/optfs backups. These should be around 300and 600-2gb respectively.
Also, if it fails to restore, you can reflash and restore individual files , so your stuff -should- be easily recoverable.

On top of that, everything -should- work fine anyway. I -would- install ssh-server and test that it works though: It will give you a method to fix things if they -do- go wrong.