I have to say that the Bowers and Wilkins is a superb system in my view and one of the most worthwhile retrofits I've ever done.
You are welcome to call in and hear the difference between your setup and mine if you need convincing 🙂
If you already have the mid range system, the physical installation of the retrofit is reasonably simple. Even if upgrading from the base system there's not a great deal more to do.
CCF puzzled me for a while until I saw it done by a very kind chap who, unfortunately no longer drives a Jaguar. It is also, with hindsight, a simple procedure.
Let me know if I can help. I notice you are not far from Wolverhampton if you decide you'd like some moral support for the CCF editing phase 🙂
You do , in my experience, need a high quality battery support unit as well as SDD, to avoid bricking your car.
Jaguar dealers are not allowed to carry out the CCF edit as it officially "can't be done" and to be fair, they have never been shown / told how to.
The offer of assisting, of course, assumes the cessation of the recent restrictions of movement. Both my wife and I are considered vulnerable persons and are therefore hiding behind a mine-field and machine gun emplacement at the moment 😉