Well, we'll be camping out in the living room, but that has windows. I have done the math neurotically, and I don't think the giant oak out front is capable of getting up enough speed to take out the attic, my bedroom and make it to the living room. It's only about 15 feet away and a good 50 feet high.
We have no inside rooms, unless you count the furnace room that used to be the service staircase, and I don't think all of us could fit in there with the furnace if we were standing up. I guess we could sleep in the foyer (only two windows and a door, all protected by the porch roof) but that seems weirdly exposed.