I have been working on a broiler project too. Sorta from scratch from what i was able to get my hands on. I got two dark cornish hens with my maran roo. I plan on keeping some of the hens for dark eggers and the males for meat. I have my first batch growin out now. I plan on keeping a couple hens for the breeding project and I also want to end up with a maranxdark cornish roo to breed back cornish hens. In the future I hope to introduce a pure Cornish roo and kinda grow with. My dark cornish are hatchery stock nothing special. I would like to get eggs from a breeder that has better stock. So far I have a SLW X Dark Cornish Hen i hatched when the cornish first started laying. She looks just like the cornish except silver laced instead of Gold laced. Very nice breast on her too. The maranX Cornish are very large bigger than the cochins and pure marans same age. Beautiful big breast on them too. Im excited about them. Plus I read that the french developed the marans for good taste too. They are dual purpose in France.