I am a former chicken hater.
I see that you are concerned about flyers. I have one smaller mixed breed rooster that easily clears a 7 ft privacy fence, in fact he even flies onto the roof. If you plan to let them freerange in your yard then you should pick a heavier breed. Orpingtons are heavy, meat/eggs birds that are not good flyers. Mine can get a couple of feet off the ground but really don't even try to go airborne. They are known for being friendly, laying large light brown eggs, and come in several colors.
Orps are not your only option but I thought I would suggest a breed I am familiar with that would most likely fit your situation. If you do decide to get chickens, I doubt you will regret it. Good luck!