Hey! Glad you found your way here...any questions you have you can message me on here or there are many threads to ask questions, I am not experienced in gease, but very much in chickens

let me give you a heads up though, you should encourage your kids to handle the geese as much as possible while they're babies, other wise they will turn out just as mean as any rooster (weather male or female) also if you give your rooster a chance to adjust and learn where his hens andfood source is, then, after awhile you can let him free range and he won't go anywhere. If you plan on getting more chicks in the future, I suggest silkies they are extremely docile, although they dont lay as many eggs as a normal hen. Hope I helped!