Honestly, except for the preservation part, I'd seriously suggest Mystic Onyx instead of the cemani. They look almost exactly the same if they don't get the feathered leg or crested genesI have always wanted to keep Ayam Cemanis and Buckeyes.And I also love the idea of not only keeping rare breeds but preserving the breed as well.
And I also love the idea of not only keeping rare breeds but preserving the breed as well.

"What I'm I supposed to do with all these boys!"

I could never eat my babies! 
Just saying Good Night!
Don't let the broodies bite! Or is that bed bugs? 