The Ha only shot looks great Keith, and yes you have brought out plenty of nebulosity.
The combined data image looks ok but the cyan in the bright parts is overexposed and looks wrong. I don't have a diffinitive suggested fix as NB imaging is so much like ..?..cooking a bolognese sauce, bit o this bit o that..
just have another go mate
How would you quantify the guiding quality of the SX AO? Is it easy to use?
Mike