I didn't say that, and I don't have any set/goal number in mind. I'm just not necessarily interested in episodes that don't have much to do with the political story, and I'm particularly not too interested in the Sisko and Quark families melodrama.
Well, I’ve introduced sceptics to DS9 before by telling them to start with season four. In terms of episode by episode quality it’s one of best of the franchise and usually it’s enough to hook people by the first couple episodes alone. (They also invariably go back to rewatch the earlier seasons at some point and benefit so much more from doing so).
Also, with regard to your dislike of the Sisko and Quark families, if you watch “The Visitor” and “Little Green Men” and still feel the same then we have nothing further to talk about and you should seriously discontinue any plans to watch more of DS9.