For the checklist, you may want to take a look at the one I created some time ago (mostly based on https://forums.flightsimulator.com/t/wt-cj4-checklist/ but a bit expanded to suit my needs):
For the pax briefing, I once heard of a workaround but I never found out more. In https://flightsim.to/file/29681/cj4-wooselmod we trust, hoping that one day he’ll restore the briefing on top of all the other excellent goodies he’s already added to the CJ4.