In terms of non-weekend events - I have every second Friday off (part of the reason for my username;)) - this means every GMT Thursday onwards is potentially free for me.
In terms of an 'endearing' name for the KNF and Ronin to call each other...
I agree gaijin is not appropriate. Factions should choose an english name, and I can offer some Kusari translations based on this translation server...
For example we call a Hogosha 'Batu' or pig, a play on the Hog in Hogosha.
In turn, the Hogosha could call us 'Shouki', meaning swamp gas or methane (and we know what that smells like;)).
For the Ronin, I would suggest a less antagonistic name for Naval Forces personnel might be 'Boushin', meaning blind acceptance; blind faith; credulity.