If you're going to do this, I would let all of the seeds grow out and cross pollinate everything to try and capture all of the available expressions of the plant in seed form.
What you might determine to be the "best plants" might not meet the criteria of myself, for instance.
I plan on doing this with an old pack AK47 I have when I have the space. Growing all 11 seeds out and letting them cross pollinate. Then start sifting through the seeds looking for the Cherry AK pheno.
I don't plan on selling any of these seeds though. Once I find what I'm looking for I will probably gift the rest.
thank you, thank you, thank you. Let it all breed with it all. Trying to save something like that, you need to breed every seed you got in hopes to create something close Even if you don't like how one of the beans grew, its makeup is still there and could be needed, think about how land races are, its all hits it all. When backyard breeders pick what they think is the best, does not mean it is the best to others, let alone for breeding. (not against people breeding, not trying start a war lol) But as an example, there are some strains I want, and I know some ppl that have them, but they are from seed. I only will take clones from people, if its a clone only, if its a seed based plant, I rather order the seeds myself and pick what "I" feel is the best. However, if I wanted to then make seeds to keep that type of plant around, I would want to grow out many, and keep each mom and dad alive, back cross when time is right, least try to do it right. The more beans you have, the better chances of making it happen. That being said, I wish you the best of luck, just remember( as you may already know) it is more then just breeding 2 plants and calling it a day, but I'm sure you know all this.
Just wanted to agree with got_bud on using all the avail seeds you have for this project.
And now to answer your question, you have seeds. Is is up to you what you do with them, I think I would be nice to let the original breeder know, and when/if you sell them, please make it well known that its a recreation from original seeds.
Make a grow log for it, I'm sure there are some breeders on here that would be happy to offer some help. Also to Got_Bud, gluck on the cherry hunt, something I would like to add to my stables...