They should all get along. I had 2 buff orpingtons, 1 black australorp, and 2 silver laced wyandottes that I put together. They did fight for a few days to make a 'pecking order', but once they figured that out, they left each other alone. Mine didn't make each other bleed, but just fought if the other one got in it's way. It took a while, and might take more or less time with yours. It shouldn't take more than a week I wouldn't think. If they did make each other bleed, you might want to seperate the injured one and put it in a cage beside the other chickens. If they see each other for a while before they are together, then they won't fight near as badly. Every once in a while, they might start a fight, but it shouldn't be very bad. But no, the different breeds makes no difference. (my silver laced wyandottes were the lowest on the order and aren't trouble makers. Yours may be different though. Each bird acts different!)