I free range my flock of 13 adults and 5 chicks daily, as long as someone is around to keep an eye on them. 5 hens are Dominiques, 5 are buff orps. They have been free ranging for all of their 2 years with no predator issues. I also have a white leghorn hen and a white leghorn mix hen, as well as a golden comet/BR mix roo. They are all very aware of what's going on, but I would really recommend the orpingtons and Dominiques for free range. They are friendly, and they both lay nice light brown eggs.
The 5 chicks are mixes from what I have. They were raised under a broody and she takes them around the yard without much issue.
Thanks for the suggestions, I feel this was the wrong question to ask, I am going to get different answers from everyone! :)