considered relocating finder

I don't recall exactly my train of thought but increasingly I was worried about space and weight issues with the barn door tracker. With the camera, camera grib for extra power, and a long lens, would the payload weight become to great for the drive motor. My design has the finder scope on the top plate. Did it need to be there? As well, if it could be on the bottom plate, it would be out of the way. This might afford greater freedom of movement and avoid collisions when aiming the camera. I saw a number of designs where the finder was very near the hinge. But then I spotted Eli Perelman's design with a large bottom plate with the finder scope outboard. Ah ha!