I am looking at a project that consists of a bunch of flat panel doors, 23x84x 3/4 for cabinets lining the sides of a long closet/dressing room. They are to have a specific matched veneer on the faces and maple veneered backs. Because of the quantity and size I will most likely have panels custom pressed. The customer doesn't want battens on the inside, how concerned should I be about warping? if the answer is highly, what batten configuration should I insist on on the inside. Thanks