When to put a good dog up for breeding?

putting the hollie pup up in my opinion is the right thing to do...the only picture I saw of her made me want one just like her...we can wait and breed a new generation every five years and in twenty years will have improved 4 generations...or as soon as we know that we have a top up and coming young dog that we can breed at 1.5 years and at 8 to 10 years we can have a great line of dogs and the gene pool has been cleaned up to an acceptable level...we only live once and time is not on our side...that is about how I see it...this way we will also have 3 or 4 generations in the yard that are young enough to hunt or breed if needed.

I like a 3rd generation male breeding 4th and 5th generation females...that is my opinion on breeding a better line of dogs...at my age I follow a different plan...