Bird recommendations needed

I'm moving to a farm next month and getting chickens. Yay! In addition to my free ranged gals, I'm also building three tractors, one for each of my big children to collect eggs from.

My younger son is getting bantam GLW from somebody here on BYC. My older son will probably get bantam EE from mypetchicken.com unless we can find started pullets, which he requested.

My older daughter wants a bantam chicken that lays white eggs. It needs to be cold weather hardy and, of course, relatively friendly and docile. I prefer to get heirloom breeds if at all possible, but if not, I don't want anything overbred or unhealthy genetically. Suggestions for where to get them, preferably for pickup within an hour of 12477 (Saugerties, NY).

Thank you!!!