I tried and failed with Japanese maple in Central Texas. They require a lot more light than the descriptions led me to believe. Mine strained for the light so hard it became an eyesore. At the same time, they just can't take Texas heat. They also require a special bed, with highly acidic soil. Hollies can also get quite leggy without adequate light. I suppose you wouldn't want something as commonplace as nandina. If you get at least four hours of direct light, with some filtered light, you might take a look at Spring Bouquet Viburnum. It would like to get to eight feet, but will settle for five.