There will be nobody relevant on that first floor after Marco takes Zoro, Robin and maybe Brook on the rooftop. So Chopper might help Nami and Usopp vs P1 and Ulti.
Robin seeing Judge's son struggling against woman might decide to stay on that floor with Brook.
Queen will try to catch up with Marco, that's when a Judge's being freed of the women's claws will stop Queen.
Jimbei vs Who's Who.
Then on the ultimate step with King, Marco, Zoro and Luffy will arrive at the same time, one of them (probably Marco will stay behind since he doesn't what to do, might also be Zoro if King tries a sword's attack).
Luffy gets on the roof with Zoro or Marco, Kidd and Killer follows.
Every main fights is set up.
Thanks me later.