you've got the right camera and the right tools. Sorry I didn't see this thread to help earlier. Capturing with Nebulosity, stacking with DSS and processing in PI is what I do.http://qhy8.wikispaces.com/How+to+stack+QHY8+images
Capture raw FITS, stack in DSS, process the 32b TIFF output file in PI. I wouldn't call it 'simple' but it's straightforward. Success guaranteed.
All the best,
Takahashi EM-400 - Edge HD 1100 - HyperStar 3 - WO M110 - FR-III/TRF 2008
QHY-8, DSI, DSI-Pro, IMG0H mono, PC164 video
PixInsight, Nebulosity, DeepSkyStacker, PaintShopPro X2, PHD