I think chickens require around ten square feet of run space each, and three square feet of coop space. If you have a combined coop and run, then at 60 square feet, you're just coming in under the wire for five chickens. The fact that two are bantams doesn't really alter this requirement, I believe.
Watching the pecking order get sorted out can be nerve-racking, but keep an eye on them for the first day, and it should set your mind at ease that they all will adjust easier than you think.
Watching the pecking order get sorted out can be nerve-racking, but keep an eye on them for the first day, and it should set your mind at ease that they all will adjust easier than you think.