Considering there is 60+ people going on this trip, there is not that much you can sort out. ideally with this amount of riders, different skill levels etc you have 2 choices. either it'll be a gentle rideout where everyone keeps the speed down with 1 person leading the ride, one tailmarker and maybe a few inbetween knowing the route.
or you kind of do it like a trackday organisation. novice, inters and fast. obviously fast group out first then inters then slow. again one person in front that sets the pace and a tailmarker per group. it would help the novice group if they have an experienced leader and tailmarker.
the way you want to do it is entirely up to you.
there will be a lot of different skill level involved in this trip and a lot of people I haven't ridden with, or even met.
If I remember correctly there was a rideout from MCN ninjas/visordown that had a big accident, if I think there was over 20 bikes involved in it.