I'd keep them
.
I have 6, 2 gander and 4 geese.
They get to know you, only normally aggressive during breeding, even then only if you go near the ladies, (mine anyway).
They have characters, mine answer when I call to them, when I go to put them in at night I call and see where the answer comes from, saves going out to the field if they are already waiting for supper.
Lay fantastic eggs in Spring, you may be able to sell some, i used to sell 50p each, but I've seen them at a £1 each.
Or if, by spring you are getting into the swing of things, get an incubator, hatch some and sell them.
Could be Embdens, if big and white, and blue eyes.