WHAT IF: Way down the road you made the living room a foyer and dining room, expanded the kitchen into the current dining room area and then added a big family room off the back opening to a covered porch (at same time you add a big master suite off back, too). Dream big.
I know it's not exactly like yours with the lighter colors/creams, but see how the blue accents make things lighter and brighter? A few light blue pillows and curtains, with a few maybe cream/yellow accents and your dark brown and it would be gorgeous!!