Hi there, we are looking into adding 2 new Red Sexlink 16 week hens to our flock of 4 - (2 black sexlinks and 2 austrolorps.) The old flock are all the same age- about 8 months old. I was going to section off the run for a few days before letting them mix. But they do need to sleep together at night and I'm a bit nervous at how to deal with that. Please give me all your EXPERIENCED advice. What worked for you, what didn't and any tips you might have. I still have time to back out of this if it's not a good idea! Thanks.