I think the main question is how happy will others be living with my Dad. I don't want him to stay behind and I think I have a shot at convincing him to move for as long as we need to. He's terrible at saying no to me.
We should make many of these decisions as a group, I think. People might comply more if we decide things as a group. We have some smart and experienced people around. It cannot hurt to draw on their experience.