It's possible.
Not coincidence that:
- Nami likes to drink liquor just like Kaido
- Nami's epithet is Cat Burglar. Out of all 10 Straw Hats, only her whose epithet is named after a Beast.
- Kaido tried to suicide and hurt himself. While Nami on her central arc did the same but less drastic, by repeatedly stabbing her own arm with a knife.
- Nami is cunning and famous for tricked others (stealing the ship from Jonny and Yosaku, multiplying Zoro's loans, etc). While Kaido also tricked Oden.
- Kaido made his debut in Sky Island. Guess which Straw Hat spent the timeskip also in Sky Island?
- Kaido's most distinct trait is his dragon (animal) tattoo. Guess which Straw Hat that also has an animal tattoo?
Now with Yamato appears as Nami clone, it just confirms all these things.