leading in trailing technology
Nice. I've never built one but I did read up on it once. It looks like you're doing it right. Keep it well away from fragile electronics, as far as I know those things can induce destructive currents at greater range than most people expect. If you can get a load of large metal boxes to put small digital stuff in, so much the better. This risk is what put me off building one.
I have only stayed the the SGTC realm but this man: http://scopeboy.com/tesla/ has done almost all of them, save for maybe a vacuum tube TC. Good luck though. Can't wait to see the finished arcs!
If you're the smartest person in the room, then you're in the wrong room.