We are finishing up an update to our kitchen (white concrete counter tops, white subway tile and a new window) and are in need of advice on the back splash placement. Currently the tile goes to the window. We are wondering if it should extend all the way up the wall (where the knives are currently mounted). Also, on the other side of the kitchen, should we extend it up to the glass cabinet and then from floor to ceiling on the side of the counter right there? The more we research the more confused we get. Thanks so much.