WIll you have already seen WIshes, or will you have a chance to see it later in the trip?
If this day is your only chance to see it, I would scrap both ADR's. This is the last chance for WIshes, it is going away, and it is different inside the park, so if you view it from CG you will see a lovely show, but no Castle projections. If seeing Wishes is simply a bonus with dinner, and you will see it from inside the park during your trip, then CG hands down. If not, no way would I miss it from MAin Street, or in my sad case, I never saw it from behind the Castle, and thought I would "another time", which isn't happening for me now.