I have to say, I have Buff American's from Metzers -- mine definately have to be watched at breeding time. I chose Buffs because they were calm, but these require more watching than I was hoping for. Still love them, but I can't allow anyone but the one 12 year old daughter who does all the chores into the pen, or myself. Two of them are good bluffers but back off if you stand up to them.
The third gander was the largest as a baby (he's the smallest gander as an adult) and was handled the most as a gosling. He is the worst of the three as adults - always sneaking up behind you. I think he'd bite if he could -- he's been pinned a lot lately, but keeps forgetting his lessons : ) Just from my experience, I think a little distance might be better until they are grown, and then spend lots of time with them BEFORE the breeding season. Then, no matter how nice they are, don't let the kids go in there unless you are going too. It will be pretty easy to tell. My ganders also tend to leave taller people alone, but will be alarmed by my five year old, and not intimidated too much because he is shorter. I was glad that we were there to back him up. .
From May to January - my Buffs are sweet - you can go in with them and they will come and visit and follow you around . . . no hissing, no rushing, and the kids can be in there as well. Never had a problem with a female. I've also heard that the first breeding season is the worst and they do settle down some in later seasons. Keeping my fingers crossed . . . The Cotton Patch sound lovely -- too late now for me to get a different breed, but we are sure going to be handling any new goslings differently.
I'd recommend a fence so that the kids can go outside without fighting ganders! And we are downsizing chickens in favor of ducks also -- love the eggs and the hardiness . . . and the funny ducky personalities!