heaps of good detail here John, well done
as well as upping gain, gamma, saturation etc, you can run at 1/10th sec exposure at 10fps with good result (or drop to 5fps at this exposure if seeing is really good). I know a lot of the guys are advocating very high gain settings, but 40% that you're using is as high (or higher) as I'd be comfortable with using on the neximage - esp for Jupiter. Grain and focussing become far too problematic unless you can stack a heap of frames (>1000), and with Jupiter as you're limited to ~90sec before rotational effects kick in at 10fps you only have a max 900 frames to start with.
cheers,