All on one floor! Personal changes: make the office into a fourth bedroom, turn the jack & jill bathroom into two bathrooms, make the guest room a combination library/guest room with entry from the foyer and hallway, add a basement and move the fema-approved safe room there for increased weather protection. Full front porch and make the kitchen a large eat in kitchen?
I call this a studio house. Except for lack of closet space, bookshelves, and studio space, this is great for a single person. But even for just two people, I would feel crowded. Bathroom is "normal" sized tho.