In your shoes, I would speak to somebody from the CAA before you start. It would be heartbreaking to spend time and money on a project to have a CAA surveyor reject it at the end. A phone call costs nothing (in real terms)
They have been quite hot with us on data plates and serial numbers (I work with historic aircraft) and if there are any doubts about the aircraft's true identity then the CAA will require that you absolutely prove the history beyond all doubt. That will of course mean log books and photos but also permanent markings on the structure.
Find out who your local CAA surveyor is, and get some advice from him. If he is happy with your plans at the beginning, you stand a much better chance of getting a succesful outcome.
Good luck!