Turn 17 actions:
300 cultists: clear a path through spike, pitfall and deadfall traps so we can safely leave our base. (Ideally get the traps to serve as defenses like they are supposed to, but just removing them would be fine.)
4*1 cultist: go talk to Rosabel, Rabe, Tavern wench, and Unescargot (or their cultists), respectively, about cooperating with ritual research. Offer the orange summoning ritual as a show of good faith. (If the other cultists have cleared a path out of the base use the path.)
75 cultists: improve PR. Do not leave the base.
80 empowered cultists: continue research with a focus on rituals. Do not leave the base.
200 heavily armed cultists: guard the base. (This means, if inquisitors try to build traps around the base, you shoot at them.)
Koshu: recruit.
Any cultists Koshu just recruited: set up a secondary base elsewhere. Preferably with less horrible death. (Edit: reduced amount of horible death, not just death that is less horrible.)
What? Actually fixing your base instead of letting your cultists die by the dozen? What are you, sensible?
Fix base: [1] They try to help, but many accidentally fall in a pit and die. The rest are too scared to leave the base. (-200 cultists)
Spikes: Kill everyone who leaves
[6] They kill half the people who try to leave the base, but a path is broken through in the process (path out of base opened, half of cultists who leave die)
Share the oranges: [4] 4 of your cultists run off to deliver the secrets of the citrus to your "friends". Two of them die before getting out, so Rabe and Rosabel don't learn the ritual (-2 cultists, TW and Unescargot learn summon orange ritual)
INTERNETTERY: [5] They bring your PR to new heights! (excellent PR)
Guard: [5] They take up positions overlooking the outside. They should be able to stop anyone from laying bear traps outside your base now (200 heavily armed cultists guarding).
recruit: [3] You use your psychic power to recruit more people to your side (+50 cultists)
second base: [1] They try to build a second base, but it collapses and they all die (-50 cultists)
Inquisitors: talk about what an awful monster Koshu is
[2] Their internet is down. Damn.