Image is looking great, Suavi!
If I might chime in regarding "super-lum" combination; it's worth trying to integrate all Ha subs into one master (with rejection), all SII into another master (also with rejection), same for OIII. Then using those masters, integrate them using ImageIntegration with no rejection. This gets rid of satellite trails and FPN (if you've dithered), while giving you a higher SNR "super-lum" master in the end. I think this is what Rick was suggesting, but I think from your post above you simply integrated all the subs together.
You might want to play around with noise-weighted vs "don't care (all weights = 1)" as well. Noise-weighted will heavily favour Ha in most integrations, giving you a lower noise image but without much of the detail from SII / OIII, while "all weights = 1" will bring in more of the detail from the others at the expense of more noise.
You could also play around with PixelMath to integrate the masters easily with a higher degree of flexibility regarding the weighting.
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