Tonyroo
Free Ranging
You can try it for yourself and see if it works out. From my bantam experience when there in a closed run they can't escape the big chickens to save there life. Ever since my trial and errors, I have removed my run entirely. They have full range of my backyard, despite all the predators lurking. And I have lost quite a bit of birds. But they don't fight among each other or cause issues.So they won't be able to get along okay? I read that they can, but was looking for other anecdotal evidence. Someone here said they tried and it was okay, but it also depends on their personalities too.
https://domesticanimalbreeds.com/serama-chicken-breed-everything-you-need-to-know/