Don't forget the turn on the ground if you have a fire on the take off run. Shortest turn to put and burn downwind to aid egress.
Include pax comfort in the brief - fresh air -
And how to get into the cabin i.e. walkways, step up's and handrails.
Ask if their feet are clear of the rudders for take off - you may need them for your emerg turn or if they are anxious, they may tense on them.