I have no idea on the 1st question; I suspect it's unpredictable how they'll respond. But I would recommend another coop in any case; I find it very useful to have several (though mine are small and portable and just for sleeping in, which is not what most people mean by 'coop').
So, last year I brought up and left my old mini coop w/5 nest boxes. It can split into a broody or quarantine or intro etc. Sleeps 6 nicely. Also converted an old Hawaiian horse trailer into just sleep protection as I too just want safe sleeping quarters. The run is about 25x40.
I did fashion some solid hops and roosts in the trailer coop and it can sleep about 15-20 (?) comfortably and safely.
And they have a whole forest to wander fairly freely. No predators cept possible people and dogs on rare occasions, maybe. Last year 0
My dream goal is to have 2 functioning flocks. Beetles and Spiders. Beetle has not incorporated into the flock yet. Look but don't touch only. He is about 10 months old (I think) and in his own quarters. I'd like him to peacefully care for 12 of his own girls. I was going to do his intro at home when I took Spider and the A-team up but my concern is when I bring them down.
Did I explain any of that a little better? Currently Spider is in charge of all hens, pullets and chicks.