They look fantastic, and those are very good qualities to be combining in a breed. How many hens and roosters did you start with to get those 27? Line breeding is the only manner I know of to get a closed flock to last, but that wouldn't do much for stabilizing genetics. After 6 years, I'd expect some inbreeding problems to show.
You'll never get away with this you overconfident blob! The most you will ever get is this tiny ad:
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