I had BA for a while and really liked them but two eggs a day is Guinness Record material IMO. My chickens are not pets but they did not run from me, came when called (for daily treats), were easy to handle (we do so after they go to roost at night), not flighty or hysterical in any way. They were not broody so the only time they were "off lay" was during molt and the short days of winter, same as any other breed. As for how big they get, check with the hatchery stats. They're commensuate with most dual-purpose breeds, we got both pullets and cockerels and put the males in the freezer at 14-16 weeks IIRC. I think they dressed out right around 3 to 3.5 lbs.