It' all about the processing to bring out all that data, have you tried 5 minute exposures? Also what processing software are you using? Are you separating the Ha and O3 channels? There is so much more data to pull out.
This was with the L-extreme and 3.5 hours data but at 5 minute subs and Astropixel processor and Photoshop to bring out the Ha channels. There is so much more you can do with this but a great start.