Those all sound good. I would say that the sky is the limit though. Pretty much anything that would be of interest to non-Christians but with a biblical basis you know? Better sex in marriage, time management, finances, career choices, serving in the church, children, God approved fashions, what the bible says about 'x', how to find healing from past mistakes ( I see you already said that- recog and releasing hurts), how to maintain and stay happily married, you know? Lot's of possibilities. Have you tried listing the options and polling those likely to participate on what topics they would like to learn more on?