Looks good! Will look even better with bellows attached and on the rail. Still, consider adding movements later - front swing is tons of fun!
You could make U-shaped brackets out of aluminium relatively easily, giving you the option of tilt and shift. If you have gone far enough to mess with bellows, rail and various lenses then why not give total control of the image with movements? But don't take this the wrong way, this is your camera, do as you think is better for your application