Black Sex Links (Black Stars) would fit your criteria very nicely. They are cold hardy, friendly, laying machines. I've raised them for years (along with dozens of other breeds and hybrids), and they have been my best layers, consistently churning out more than 300 eggs per hen per year. If you want a standard breed (BSLs are hybrids), Australorps, Orpingtons, Sussex, Brahmas, and Faverolles are all cold hardy and have a well deserved reputation for being calm and gentle (potential lap pets). In addition, they are all good layers of large, brown eggs (Australorps are excellent layers). With respect to Blackberry18, if your winters get really cold, I wouldn't personally recommend Leghorns. Even thought they are excellent layers, their large combs are very subject to frostbite (I can attest to this from experience). Also, Leghorns are typically high strung and flighty. Mine screamed bloody murder whenever I handled them (It's why I don't have Leghorns in my flock anymore). If you wish to research the various breeds further, there are some good quick reference charts at
http://albc-usa.etapwss.com/images/uploads/docs/pickachicken.pdf,
http://www.mypetchicken.com/chicken-breeds/breed-list.aspx, and
http://www.sagehenfarmlodi.com/chooks/chooks.html. Also Murray McMurray has an excellent "chick selector" tool at
https://www.mcmurrayhatchery.com/chick_selector.html to help you determine which breed or hybrid is best for you. Just be sure and click on show more characteristics. Even if you don't purchase your birds from MM, the chick selector is still a valuable tool. Whatever breed or hybrid you decide to get, good luck with your flock.