A Benbo tripod with a telescopic Beta Stick added as central column, and a ball head added to the top with a Gorillapod SLR Zoom (the largest one). The previous photograph of the unextended rig shows more clearly how these have been put together.
There is still one unextended section of the Beta Stick left at the top. Given the weight of the camera and Gorillapod extending that produces a great deal of sway at the top. With the thin top section fully extended the natural sway can take the camera's weight dangerously outside the base tripod footprint. Since the fully extended Beta Stick isn't strong enough to lift this weight from a horizontal position, there is the worry that a big sway might be uncatchable and lead to an expensive accident.
The legs of the Bendo are splayed out to give the greater stability of a wider base. Adding a bag weight under the central column would also add to the stability.
Having lofted the camera to a better point of view, the next problem which needs to be addressed is aiming it. The easiest way to do this is to start with a camera which has a live view LCD plus a VGA output for a TV or remote monitor. The Sony DSC R1 up there is just such a camera. The next photograph shows the remote electrical connections for shutter and live view.