For some reason i believe DH part 2 will be from after Malfoy Manor so that they have Gringotts and then Hogwarts battle in the same coz that is kinda when the action kicks off. That does take up a big chunk of the book. Or do you think they should have some more in part 2. Perhaps just before Malfoy Manor, once Fenrir gets into their tent and the trio are "kidnapped".