My favorite setup over the years had my Honer D-6 on it's own legs with the Rhodes on top of it (hanging over the back) and I used the front legs of the Rhodes in the rear, so they could extend and keep the piano level. It was the perfect standing height, which I prefer to perform at. The top of the Rhodes was flat for the synth-du-jour ... back in the 80s, it was a Juno 106, then a JX10.... those were the days!