Hello and welcome to BYC. Glad to have you here in this poultry loving community. Please keep us updated as to how this turns out. I have a flock of Dark Cornish but no White Plymouth rocks yet. I'm Hoping that the second cross will turn out some white birds.
Hiya, Steve, and welcome to BYC! Good luck with your breeding project! I have fun doing that with my silkies. It's exciting what beauty they can produce!