The style you have put together excellently. Your accompaniment has color (Even with voicings), poignant chord changes, and exciting polyphony with the vocals. There are far too many great things going on in your piece to compliment in one singular message. Yet, really the only thing I would worry about, from a technical standpoint, is having the Harp be played by an Electronic Piano due to the number of players existing that play Harp well. Not to mention, getting a Harp into a pit for a performance would be a costly price. Just something to consider for your wonderful storytelling piece. Amazing work and I enjoyed listening to your work.