The general view expressed in these forums is that it is quite difficult to digiscope with a super zoom camera. I have an FZ50 but have not contemplated using it for digiscoping.
You might consider spending money on an Olympus T Con 17converter which would bump the 18x zoom on your camera up to nearly 30x at 8.1 million pixels. I have this item for the FZ 50 and have been reasonably pleased with the results. The convertor costs about £80 quid.
You would have to check whether you would need a step up ring to attach the convertor to the camera thread. In my view, you are likely to get more return from the convertor than trying to use the camera to digiscope.