The only thing to add is that your clearance into Channel Islands airspace will now be to a VRP - and one appropriate to the runway in use.
That is;
Alderney Lighthouse if 26 in use
Casquets Lighthouse if 08 in use
As said, Call Jersey Zone on 125.2 10-15nm north of 50N and expect a freq change to Guernsey Approach on 128.650 entering CAS. (So worth setting up)
Therafter, Alderney tower of course.
Jersey can give you the weather if they are not busy (and you call in time!)
Good luck