It's interesting you suggested putting the newest girls in the new coop first. That was what we were planning w/ the two new pullets arriving this week. We're still assembling the new coop and by the time it's finished the girls should be done w/ quarantine and they'll get to use the new coop first while the old girls continue in the old coop for a few days. When the old coop gets picked up by our friend for his flock, the new girls will be the "owners" of the new coop that will be shared by old and new alike (5 hens total). Introducing the old hens will be done at night. I've got gentle breeds like Ameraucana, Silkie, and Breda so hopefully there won't be excessive drama in the morning when they all wake up!
I just believe with the older girls being moved into "new territory" and the new girls already being there they would less likely feel the newbies are the intruders. Similar to how you would introduce new Roos. I've never had great success with the see no touch approach because once they are accessible it's game on. I have all different breeds and have had for years, none of them are overly aggressive but I find a separate coop all together works best when introducing because eventually they are "allowed" to bunk with the existing flock at everyone's own pace. Then just one day the smaller coop is empty. Mine free range so it's a bit different but if it were me that's how I'd approach it.