I'm very impressed with your efforts and the results, Yetti. Thanks for the pictures.
A few years back my wife kept three geese in an arrangement similar to yours but with no goose house. The fencing was similar and about the same height. One day a predator--one large enough to bend the wire fence almost to the ground--climbed in and managed to grab one of our geese. We found the remains in the woods nearby. Then a few weeks later, the other two were attacked and one escaped with major claw injuries to his back, but he survived after some good vet work by a local rehabber and my wife.
I only mention this as a caution to you. You're probably already well aware of that possibility, but I don't want anyone else to have to go through what we did with our geese.