That Mr C is very easy to do and use - all it is, is practise and you are good at that
youll need for existing machines a usb version of windows to set back to the oobe, self deploy is best but only takes you so far
youll need a suitable dynamic aad group for the pc's to go in and get policies
you should still get internal connection if it is an aad machine but for legacy gpo then will need to be domain joined
Phil