Here's the new floor plan of the house. I added an actual powder bathroom, as well as a bay window to the dining room. I'm much happier with it now.
The dining room I had a hard time with. I changed the dining table a few times and went through about 10 chairs before I finally chose the Saarinen chair. At first I was going to use a leather on the back of the chairs and a fabric on the seat, and then decided on using the blue snake-pattern leather on the backs of all the chairs with six different leather colors to go on each of the chair seats and back fronts. It would definitely be a colorful, moody dining room, which suits me.