With the way he's been fighting lately it seems completely doable. But I feel like Big Mams is going to be the first one on the list, he's already challenged her, plus he's destroyed her supply of fruits from DonFlamingo.
Brilliant chapter! I love Law's look of horror when Luffy announces the party. Then Momonosuke (who's haircut left me near gobsmacked) reunites with his father in a heartfelt moment and Law gives Chopper a panic attack. Too good!