Sounds good but don't fertility go down at that man hens
A coturnix roo can easily keep 7 hens fertile. The hens can stay fertile for several days after a breeding, but he'll breed each hen more often than needed for fertility anyway. I just did an incubation test for fertility on a one year old roo with 6 hens and he had better than 95% fertility on those eggs. Not bad for an old man.