Orion, keep it simple
Stacking of 30*300" = 2h30 with my unmodified Canon 600D and the canon 50mm 1.8 at f3.2, 800 iso. I was using a Baader UHC filter in front of the lens but it create a special vignetting due to the relatively narrowband character of this filter.
So the processing was quite difficult. I also live where the sky is well pollued (mag 4.5 with naked eyes) so it's normal the depth of the image is limited. One day i'llgo where it's possible to catch the dark dust