There’s no clear answer to this unfortunatly.
Geese are highly individualistic so it largely depends on whichever personalities you end up with.
Females are less aggressive in breeding season than ganders, but that doesn’t mean that you won’t end up with a girl that decides that she hates the ducks.
Females are often the instigators when it comes to ganders attacking something, they do this high pitched rapid cackle which is like a war cry that ganders just can’t resist.
I’ve had ganders that get along quite well with ducks, and others that tolerate them, and others that try to kill ducks, so it’s hard to say how things will be honestly.
You probably will have less problems with just female geese, but it’s not a guarantee, I’ve found that “for reasons I can’t understand” female geese can end up getting bullied by ducks fairly often. I have a few girls that get bullied by ducks, which is weird because the geese are enormous by comparison.
On the other hand, my smallest female goose will not tolerate ducks near her and has no issue sending them on their way, and she’s barely bigger than the ducks.