Well I did it, just popped 3 of the barred rock eggs and the one green speckled egg. I planned on hatching some of the barred rock's eggs anyways as I want some more sex linked chicks, though I'm hoping for mostly cockerels to raise as meat birds. I was tempted to add a couple more but all the eggs I have on hand are not really birds I want to hatch from, though I had lots of pretty greens and blues to pick from.
I suspect black and blue chicks from the BR, feathered legs means the blue copper maran is the dad. Clean legs and a pea comb means it's the EE mix who is also blue. Heaven forbid any come out red/orange/brown because I was supposed to be rid of that specific cockerel but I've been putting it off because it's been so cold. He doesn't know it yet but Saturday morning... it's lights out.