Wow, Love that this kitchen just works, every space is utilized, clean lines, maybe a bit too modern for you Heather, but is a unique look for a galley kitchen.
This is exactly what i'm talking about from your kitchen to family room area - we would have posts to support structure, have cabinets on the kitchen side for storage, I'd add bookshelves on the family side for even more storage.
Adding millwork, archways, pony walls like this, opens the spaces up while adding much needed details for the style of home you are after - love the coiffured ceiling for your new living and dining areas!