This is a long way from a finished image yet but you should be able to get a result more like this out of the 294, this was shot with mine, this is from 20 X 300 second subs. But you will probably benefit from longer duration flats. I aim for around 8 seconds and for about 30K average ADU on the flats.
SO far I have found Astro Pixel processor to work best for me in stacking.
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