They wound up being very beautiful birds!! Cochin x Orpington is a great mix being large, loose feathered, and docile. I had English Orpingtons and Brahmas and had considered crossing the two because both breed traits are fairly similar 

Here they are at almost 20 weeks.
Definitely have some cochin in them as they are all now bigger than my buff orpingtons, even little Jellybean who's much smaller than her splash "sister".