The one thing about your plans that I'm not sure about is whether they let you do that kind of turn-around - because you're not really quarantining. You're going to someone's house and then going back to the airport.
So for example, if you agree that you will be at X address for the next 14 days and they come there in four days and you're gone, are you in violation? I'm not sure, you might be. I just don't know how that works under the order.