Allan,Thanks the photo of your project. I'm sure that you will enjoy your arrays. If you have to place them close to a wall, you might try to attenuate the backwave a bit (batts of fiberglas or layers of acoustic foam located behind the baffle are two ways) if you hear any sound blurring. Generally, dipoles want to have 3-4' spacing from the wall to excel. Let us hear about your results.
Jim