Hi Afrodigh, if you get them fairly young and let them "grow up" together you can mix and match as you like. I have a small flock similar to what you are considering and have Speckled Sussex, GL Wyandotte, Cuckoo Marans, NH Red and a Black Australorp in my flock and they all get along great together. Orpingtons are good layers(I had a Buff Orp but lost her to illness
). I've stayed away from Sex link type birds just because I've heard like you that they tend to be aggressive and I just like the heritage breeds because they lay for a longer period of time and often have less health issues since they are not laying machines. So since with 5 chickens I have more eggs than I need(getting to share eggs is great
) that's just been my approach. My most consistent layer is my Austolorp but all of mine really lay well(I'm averaging about 4 eggs a day out of my 5 chooks). Hope you find the breeds that you like and they lay like crazy for you


