My Buff Orpington is very loud when anyone lays an egg and she and my Rhode Island Reds are trying to brood.
My Australorp is pretty, and quiet, but doesn't really want to be petted, etc. The Welsummer is the same way. If you were flexible on the color of the eggs, I would recommend an Ameraucana or Easter Egger, as all of ours are friendly, pretty, quiet, and lay nice eggs. One of them does lay a light green egg, but the other one lays brown.
I am looking for most of the same characteristics as you are with the flock I am currently assembling. I have several Delawares, a couple of Wyandottes, Ameraucanas, and am waiting for Barnevelders to come in (they were supposed to come in today, but there was a mix-up, and they were not shipped yet). I mentioned this little flock, as you might want to consider some of these breeds that all seem to be docile, friendly, good layers, etc.