I am not sure about that pullet, when I got my barred hens, they came from a place with several different roos, so she is either a barred rock mix from that flock or if from my flock she would be a RIR crossed with one of those black hens you have, she came from a hatch I set about 3 days after getting the Barreds so they would have still been fertile from the roos where I got them from.krazykat What is the pullet you gave me, rhode island red & what? shes getting big too will have to post her pic.
In other words....I have no clue...lol!
and if Moe turns out to be a roo, I would think if you get him in with the other before he gets too old, they should be fine if your orp isn't normally aggressive.