Good luck on the hatch!I have 3 mixed egg's that are due to hatch on Sunday. The rooster was a Americana/EE mix. The mother's to 2 of these are EE, but the other one the mother could either be a New Hampshire Red, a Delaware, or a Calico Princess. Any pullet's will grow up to add more to my genetic diversity to my NN's.
Yes, crossing the CCLB is giving bigger sized egg's, and the hen's are a little bit bigger than the full CCLB's. I still have my NN/CCLB hen's aunt here that is a full CCLB. This NN/CCLB hen is the only one that's laying right now. The other's have been molting.
Sorry that you lost a few of your hatching chick's. I'm waiting to get some more egg's shipped from @Compost King from his NN flock that he has going over there.