Congratulations on your new home! It looks beautiful. I think you are on the right track with your choices so far, you are successfully mixing modern lines (as in the table, chair style, and chandelier) with traditional (as in the fabrics, and hutch). All that's missing to bring it together is a nice rug, and some very large oversized accessories on the table and in the niche to add texture and color. (Down the line you may want to consider a window treatment and possibly something like a grasscloth wallpaper to add another layer of texture.)

If you are sure you want modern, then I would consider looking at bright rugs like these from dwell studio http://www.dwellstudio.com/area-rugs.html?limit=all
They will bring bright color and modern graphic pattern into the room. Add some bright accessories like an oversized colorful bowl and you will be there.

But looking at your choices so far, I think your style leans more traditional and that what you're really after is using traditional pieces in a fresh and modern way. If that's the case, I'd go with a lot more texture and some rough, rustic styled pieces. Think huge baskets in an array of textures, oversized faience plates and bowls, thick burlap for table-coverings, walls or window treatment, and basically anything that catches your eye in a rough or distressed texture. Etsy is a great place to find things like this.

The niche is beautiful. Let me know if you want help selecting art for it (I can be reached at jenbee60@gmail.com); I can also see a great mix-match collection of colorful pottery in intriguing shapes, or candles in rough-hewn holders as in the attached picture of an Etsy item. This would also be a great place for a changing seasonal display where you switch out items that can be stored in the hutch.

Good luck, and have fun!