Hello minaayindra.
I'm a bit late.
I'm going to write stuff that completely contradicts most of the 'advice' you've already been given.
I read you want 'friendly' chickens and for some reason, lots of different colored eggs.
In your position I would be thinking of rather more of which breed of chicken is most likely to thrive in such conditions
You've got 250 acres at relatively high altitude and it reads as if you are planning to free range these chickens and you have a lot of predators. Docile chickens are probably not going to do well in this case. Game fowl and/or flighty fowl are what I would be looking for. This would rule out all but the Egyptian Fayoumi in your choice preference above.
You will get better flock cohesion if you stick to one breed. I have yet to find any evidence bar anecdotal that any one breed is friendlier than another given the right treatment. Game fowl have a reputation for being less human aggressive than some of the dual purpose/production breeds and bar predation are likely to live longer but won't produce a great number of eggs. Given these are to be more like pets you will I assume prefer them to have a longer life span than the production breeds.
The Marans I've had here fared reasonably well but tended to be less predator aware and less mobile in the event of a predator attack. The Old English bantams fared much better. There is however a downside; they will roost in trees.
Give a rooster a choice here, which I have, often, they will always prefer to live and mate with with their own breed. This doesn't mean roosters won't mate with other breeds.
It sounds like you have the exact same weather environment, plus I back up onto 16,000 acres of state game lands; while beautiful, it certainly comes with an influx of predators, as you know. This is the first year I have heard and seen coyotes this close, but they have stayed to the nighttime so far. I also have rattlesnakes but I don't think they would attack chickens, right? A weasel has decided to move in under an old outbuilding we have, so I know that little sucker could be a problem. Our bears do come around but they have shown themselves to be avid berry eaters who really haven't bothered any other animals. I'm not worried about their eggs but if the birds refuse to come inside the coop, I'm pretty sure they won't last long in the dark hours. I just purchased what I think will be an excellent coop, which should be built and delivered within a month or two; it has a covered run but I'm pretty sure the ladies would have a better time having the run of the land. I am putting the coop in a non-fenced area but it is on a trailer and can be relocated as necessary. Thanks for the plastic sheeting suggestion- I think that will be a wonderful winter addition. No, I don't need lap chickens, I just don't want chickens who will not be aggressive with other chickens- it would be nice if they weren't flighty and running away from humans but I certainly want them running from predators at all costs! After hearing the same opinions, the ornamental breeds are out for their own safety. I really think the cream legbars will work, sex-linked EE and Red Star and the barred Plymouth rocks. The Marans I still have some concerns over after being told they were slow and a little too friendly for safety from predators. If you have any opinions about these, or hens you have tried that worked well for these circumstances, please let me know. This is how I have gone from the complete opposite from what made sense to an evolving but far better list! 
