Thanks to all who have responded. Rnd was the most irritating of the replies, but he at least has paid enough attention to label me as a "purist". That may be an accurate assessment. As a purist, all I want is perfection! However, I know those little white spots are way down the list of priorities. They won't be much of a factor in my selection. Maybe just a tie-breaker if there are two pups that are equal in other regards.
Carol, I can only do justice to one puppy at a time. I think I'll be able to make an educated guess at 7-8 weeks as to which of the females I favor. The title "Brood Bitch" won't be bestowed upon the little tyke at that time. She will have to earn it over time as she grows and learns, passes (or fails) health clearances and hunt tests, and is compared to other young bitches that are auditioning for the part. While I'd rather not have a white spot on a brood bitch, I've had more than one excellent Lab who possessed one. It's not a deal breaker!