Adding new members to my flock? Ages?! Help!?

[modchicken]

Ok so I have 4 chickens, a Red Star Rooster, an EE cockerel, a BR pullet, and a a BSL hen who should start laying in the next month or so. My 2 boys have to go so I want to more pullets to add to my flock. Ok so, I know you shouldn't really add more chickens to you chickens who are older then 6 months. Mine arent. One is close but, could I add 2 hens who are laying? I mean it's not their territory so wouldn't they get beaten up by my other 2 younger girls? Thank you!

 

[Cool Peeps]

You could try the look but not touch method first you put wire between the two flocks put one inside the coop. And the other flock outside or just seperate them inside one coop then when a few days or a week passes let them out of the coop and see the results