AndyUK
Yes, it is the only reason, and I inclined toward those as they seem smaller than servos in the photos. The enclosure is 4cm tall (interior of box head), and any motor which is less than that, is welcomed. No arduino then, but I still need an 8 button (in any format, individual or 4 way joystick) remote control only for this head movement. And a couple more for the tilt/pan.

Doddy.
The goal is to have the thing done the simplest way possible, for now. I will upgrade it in the futute, if required. The simplest idea for the mechanics of the thing, is like in the photo from the previous posts, one motor up and one down, back to back, in the centre. I have a couple of steppers from a broken printer, and they are like 1.5 cm tall, which is great for this. Servoes seem tall, but if they simplify the project, I'll figure out some gearing and position them off centre.

Typing in google RC remote, I get lots of toy cars, and those classic remotes (front and back, left and right), and a few drone remotes which have lots of buttons (more like what I need). In the DIY section, there are also good ones, but to be honest I would rather buy one.