I have American Buff, & Project Wheaten Crele Orpingtons. I'm 3 generations in with them, but any chicks would be 4th generation.I'm not quite sure what you got. I'd love some of your EEs that you had mentioned. I'd love to get a Malay, but their size might not mix well with my flock. What colors and types (hatchery, American, and/or English) Orpingtons do you have?
I have a welsummer rooster in the coop, which hasn't successfully fathered any chicks due to an old Pelvic injury that didn't heal properly.
Another Rooster is a Heritage Plymouth Barred Rock, plus a couple hens. You may get Heritage Rock mixes out of the Orpington's eggs.