You have the start of a nice scene. My question is: why go to all the trouble of smoothing your mesh in post when you can smooth it in Bryce by clicking the E(edit mesh) icon and selecting smooth? On a complex model some parts look better smoothed and some look better without it. You can experiment with the different parts of a model to see what looks best to you. As you can see, you can also set the angles that will be smoothed with the slide bar. Keep going with this.

Dan