Are you a member of the Dominique Club of America yet? We publish a breeder's directory and very informative newsletters. I would not suggest going through a hatchery for Dominiques, some have decent lines (they drop ship from good breeders, usually) others have very poor representatives of the breed. And not all breeders have good stock either I have seen eggs advertised on here and on ebay where the parent stock looked terrible.
So, what lines do you think are best?