Greg hit a lot of good points, and I’d agree that in many ways you would be virtually starting over to get a decent selection from seed. There is a reason certain varietals have been around for centuries; they are exceedingly rare. I do not know which varieties would be compatible with your area, but a good resource would be UC Foundation Plant Services. I have attached their collection here ( https://fps.ucdavis.edu//fgrvarieties.cfmhttps://fps.ucdavis.edu//fgrvarieties.cfm ) and you might get lucky with a selection that fits your needs. You also might ask around in your area, specifically any nurseries, if anyone has those varieties available, as they sometimes get brought in illegally over the years and become “available”. Granny Smith apple is a famous example. If you end up being dead-set on trying the seed method I would suggest that if the breeding parent’s info is available you might ask if someone in the region could do some extra work and get you seed that is the progeny of the original parents. Those “sisters”, to my mind, would be much closer to what you might want than an open or self-pollinated seed.