While I agree with you it would be Lisa Marie's decision as to whether or not to live at Graceland, and that it could concievably be done with planning as you said, I think Lisa Marie is more content and happy to live where she does now. While Graceland holds both many wonderful and tragic memories, (as she was there when Elvis died), and she would want to be close to them, I think she also realizes that as much money as Graceland brings in, closing it down even part time would hurt her father's income. It is her home to do with as she pleases, but I think that more people might turn on her if she did close the doors even for just a couple months at a time. And, yes, while Aunt Delta did live there, Aunt Delta never had the fame or notoriety Lisa Marie does. If she tried to live there during tour hours, no one would be able to get anywhere, it'd be too crowded. Whatever she would do though, I'd support 100%.