The advice to wait and see how their temperaments develop is good. You said the breeder confirmed that your chicks are hybrids (assuming that means crosses) so I don't think they will be like the typical hatchery EEs. I had one accidental hatchery male that went through a mean phase as a juvie, but the lady that ended up taking him said he was a good even tempered adult and was never aggressive. The second hatchery misdiagnosed-pullet male was never mean, a little standoffish. The woman who got him was very happy.Thank you!! I will keep posting updates! Hopefully he doesn’t turn out mean. I have no rules where I live about roosters so I can keep them but I don’t want a mean one and I’m pretty sure one of the other five is also a rooster (mystery egg possibly buff Orpington - I’ll post a picture). I’ve heard EE roosters are notorious for being overly aggressive and mean. Fingers crossed the other 3 are hens!
I think it's best to not handle them too much as youngsters. The hormones will happen, juvies will test and make mistakes before they mature, and while you don't want them to be afraid of people, you do want them to have a healthy respect... less likely they will cross the line.
As far as your Orpington, I would bet male but am not sure. There is probably a thread that specializes in Orps or maybe you could start a new one to get advice from folks with more Orpington experience.