The Ronin should consider themselves in for this event.
So how does 2100 Saturday sound?
Is this Saturday too soon? if so let us make it for the next one.
We can easily generate 5 GMG for Okinawa, 5 Ronin for the Sigmas and 5 Dragons for Honshu.
To stagger the timing of the fights I would like to propose the following:
1) Hogosha/AFA/Corsairs move up through the Sigmas, split their forces when the Ronin appear. Half engage them and the other half move on.
2) The Dragons would want to intercept the invaders, but have to get past the KNF first. I would suggest this fight be between Yukawa Shipyard and Nansei Research Station, with the KNF undergoing some refitting at the Shipyard - and the Dragons coming in via the Chugoku hole.
3) This should allow the invaders the opportunity to slip into Okinawa unnoticed. Whatever forces survive the fights (except the KNF/KSP) can reinforce their respective sides in Okinawa.