I've seen that combo too here in Tn -good choice! Have you thought about using white and violet flowers mixed with your pink ones in the window boxes? I love that color combination! Cutting the bushes back is a good idea...they take away from the height of the house in the picture anyway. What would you think of putting those shrubs (don't know the name) that have the red leaves for a splash of color down the walkway?
Amanda
www.artisticillusions.com