I would pick the Hogwarts because it would be cool to be a wizard. I would learn how to turn people to Ferrets. Or I could fly in a motorcycle. I dual people constantly if I could which either way I would. I would invent flying attack pies and cookies with some molten milk for Santa Claus. Now that would be funny. I could rule mortal world's were there is no magic so they can't rebel. All the other doors do not interest me so why bother with them honestly. I would be a supreme wizard beyond care. I just need to learn the spells and/or skills needed.