we are brand new to raising chickens and wanted to start slowly so we are ordering two barred rock bantam chicks. we were told we were fools if we only had two because loss is almost inevitable. we were going to order bantam cochin hens in a few months...should we order them all at the same time? what is the least stressful for the chickens? and what about pecking order? will they get along better if they all arrive at the same time?