Depending on your budget, I would replace the chairs or recover them and take 2 away from each side. Looks crowded. You say you want contemporary, but these look pretty traditional probably due to the tufted backs. I would paint the wainscoting and upper areas a bright color if you want contemporary look. Table looks good and I would replace the chandelier with a rectangular more contemporary look. This one is nice, but too small and more "transitional" than contemporary. I would get some nice large art for the side walls that you love and looks good with the colors you select. Or better yet, select a great piece of art and then pull colors from it for the rest of the dining room elements. Can't see the floor, but the room seems pretty small, so I am not sure a rug would be helpful but can't be sure about that. I'll find some photos for inspiration.

Jane Lockhart Interior Design · More Info

I would add a runner to the table to break up the wood a bit and remove the blinds and replace with panels. What color are your walls? If there's room, I agree with adding a console with buffet lamps and a pretty piece of art over it.