Long term breeding plans/bloodline questions

Hmmm theres a horrifying thought. Something coming up down the road, nasty and recessive. Another excellent point. Aleron, both sires are pretty prolific, so finding offspring outside my yard to use isnt a problem. How long would you think I should breed each line before I try mixing them?

Yeah I already figured that out Karen, which is why Im not breeding my girl directly to the first male, but instead to a SON. I want to bring his traits to the table, not his sire or his grandsire. Hes proven to throw his look and temperament, and his son is near a little carbon copy of him, with better type.

Some things to think about.....
What is the COI for each male?
What will be the COI for the aunt/nephew breeding? Generally its 12.5%, the same for half siblings, but it can higher. Since this is s "half aunt" and not a true aunt its only 6.25%. How tight do you want to go/willing to go over time? What are your goals with the inbreeding? What are the negative traits of the common male (her sire/her nephews grandsire)?

There is no one answer to this questions because it will always depend on the individual dogs in questions as well as the breeder.

You already have your first idea for inbreeding set for the couple of generations. From there which way you go would really on how the dogs turn out.
If you blend the lines and clean it up to the traits you desire from each that's a positive. You are developing a line from this foundation.

If you breed two parallel lines and combine them later if one has what you want for the other that's a positive too. You have separate lines to develop the best in each line and later combine them and develop a strong line from the two.

If you want too breed each line individually you can do that until you get what you want fairly consistently. 3-5 generations depending on what you see. We can make breeding plans until kingdom come but it really will depend on how each pup turns out at maturity on where one goes to the next generation.

With the breeding you mentioned you could still be bringing the first males sire and/or grandsire traits to the table. Those dogs genes, at least some of them are being carried in his son.

One important aspect to consider when inbreeding (really breeding period) is health and temperament. You do need to consider what is back in the pedigree and that of other related dogs as well. Those things can sure show up in your line a few generations later.