Ah, yes, that's it in a nutshell. Me too. I read a few more articles after posting here and realized that they were all referring to heritage breeds or people breeding mostly for certain colors or other show characteristics. Doesn't apply to my situation at all. I'd like to keep a closed flock and only bring in fresh blood when absolutely necessary. Given that the group here is so young and breeding from the first generation, it looks like I have a few years until I have to worry about that -- even if I let each hen brood offspring once -- or even twice -- per year.
Thanks again for sharing your thoughts and research.