All you're doing is drawing attention to yourself, and letting them know that you might have stuff stashed away. They will remember this if things go to hell. I wouldn't tell anybody local, I wouldn't even tell my family !! Because my family will come to us anyway in time of trouble, so I can help them then. Right now, they don't need to know.
Also, bear in mind that people, in general, are not "nice". Or noble or good. In general. Read any book about Europe under the nazis - people fell over themselves to report their neighbours out of greed or jealousy or envy. Uusually they got what they deserved in the end - but too late for the victims. An ordinary "nice" family has no chance in what will happen if TSHTF. Don't kid yourselves. I feel secure because of my very street smart OH, my location, but most of all because my oldest son is a biker. With mates... They arent "nice" people. But one day I might be glad of them, and if asked, they will help.
So maybe instead of trying to get people on board who don't need/want/deserve your attention....you should concentrate on your own future and defences. You know ? I sound dead melodramatic and I don't mean to - just been doing a bit of thinking while I was poorly on the couch