So thanks to Sawyer's review of the chapter i just found out there's an official map of the OP world out there and it already has the islands that Luffy, Kid and Law are going to and i had no idea it existed lol
This means that, unless Luffy changes his mind, it would go like this:
- Straw Hats go to Sphinx island (Whitebeard's birthplace).
- Kid goes to Elbaf
- Law goes to Hachinosu/Fullalead