The roo is a barred rock I think and he's pretty hefty size. And 2 girls are cuckoo marans the other a mix. I think these maran and barred roo would make great hearty progeny. The mixed girl is quite smaller than the 2 marans.
I may try and mark some eggs as a decoy clutch. Just write on them and then eat other eggs that aren't marked.
There are other issues too. I had been told to turn a egg crate on it's side so any chicks could walk out of there. The problem is the crates are on shelves like 3 foot off the ground and I would worry about them falling to an early demise. Also it's quite dark in the coop. Should I leave a light on in there?