You get what yo pay for with tripods, manfrotto tripods are perfect if you want to make it rotate with a motor. The head mount is 6cm in diameter and it is the same on a tripod I've had since 2007 and the one I picked up in the airport going on a break. The large gear fits around it perfectly with a bit of bashing and stays on without any glue. And the tripods are nice and sturdy. The head is a 3 way standard head that had 2 knobs replaced with screws.
The lens is samyang 8mm, they come in 2 versions with fixed hood and detachable hood. I've used both and its just a small difference in the lens recess of the clamp.