They look fertile. If you'd like to try incubating them, why not try it? Do you have all of the supplies you need to do that? A buff orpington chick can take a long time to become mature and then go broody - many many months, and that's if you get a hen, and if it wants to go broody. I say, just do what you absolutely want to do. If you'd like a different breed, buy the breed you absolutely want, because you will not stop until you get it, I think.