I only have a moment but I would ditch the plan to go from CYOA to Cooper day 1. If you have the usual 15 knot east wind it’s a long uphill slog. It’s certainly doable just not fun unless all the boats are full of hard core sailers. I always plan day 1 as an easy day. To many things can go wrong getting off the dock and people are tired from the travel. If you do decide to go to CGB day one clear at JVD not West End. I would give a lot of consideration to going to going to Water Lemon bay the first night and clear customs the following morning. It’s an underrated anchorage. Drop one of the North Sound nights or Anegada.
Savannah Bay is a nice stop and there is plenty of room for 3 boats. If there is any North swell avoid it. Given your planned itinerary any reason you did not charter out of the BVI?