+1 on the cool conversion. Über cool!
In reply, I would not mount the handle as close as you illustrate that you are going to in your video. In fact, if it were for me, I would request a longer neck than your first - not shorter. I feel as if shorter would cause you to have to come way over the top with your pinch for any level of comfort. If it's possible, I would try to taper the ferrule a bit as it has pretty abrupt corners.
Impressive work, regardless! Good luck & please, keep us up to date.