Can I add one Bantam to my 5 heavy breeds?

[s6bee]

I have 5, 10 wk. old heavy breed hens. 2-SLW, 1-Deleware, 1- BR, 1-Austrolorp. I have a friend who has a fully grown Golden Seabright bantam hen. She's already laying eggs. Can I add her to my coop ( after quarantined ) sucessfully ? If so how do you suggest?
She also has younger Bantams ( Mille Fluers ) what should I take? Older or younger?

Thanks
s6bee

 

[PurpleChicken]

Since the Bantam is older she should be ok. We have 2 silkies in with 11 standards, all
22 weeks. They get along fine. One silkie is a roo and one standard is a roo.
They have little tiffs but it ends quick.