The IC is nice; haven't been to CP. But really they're only about 5 minutes apart, so there's no differential in terms of location to all the things you want to do.
BTW - Disneyland is NOT close to BH/CC, so that will be the only thing really on your list that will require a longer drive ('bout an hour).
I'd also recommend going to The Getty while you're visiting. Great museum, fabulous views from Catalina Island to downtown LA.
Cheers.