Thanks all, I really appreciate the thoughtful responses. It sounds like the GM8G with a guide scope should be a pretty decent setup to start with. Since my focus is on live stacking at outreach events, I will probably mostly use it for the larger and brighter objects. I currently have a 750mm FL 6-inch Newtonian on a stock mount and a 200mm FL DSLR lens for wide field. Eventually I may look into getting an APO refractor somewhere in between those focal lengths.
