Luffy vs Kizaru, then Luffy vs Saturn (he fought Cracket and Katakuri in same arc mind you, how he defeats them and ways to recover after each fight will remain to be seen)
Or Luffy vs Kizaru only lead to his defeat Saturn makes it back
Maybe Luffy and Zoro vs Kizaru + other marines to finish the fight quicker and less injured to heal faster for vs Saturn
Or Luffy vs Saturn and then:
- Zoro vs Kizaru
- Or Zoro and Sanji vs Kizaru
- Add Jinbei to above
Overall not clear cut about the match ups with the Gorosei equation yet and the BBP involvement too.
Will BBP capture Saturn? Or will they get York only? Or both? That still could mean Luffy vs Saturn first before he gets captured (after he gets defeated)