So how I think this arc plays out
HKs group kidnap the kids and Robin (Sanji and Jinbe job to the HKs)
Luffy’s group goes to release Loki, he’s in critical condition
HK group needs to wait for their ships to arrive, request back up and the entire group is going to elbaf
SHs learn of the news and prepare for a battle, gives time for Loki to heal and assist in battle
HKs vs SHs + Loki
SHs meet with Gaban at the end of the arc for the final poneglyph
There’s probably a lot more with Kid, Urouge and Bonney but I think that’s basically the roadmap
@Paperchampion23