Looks good man!
I installed a 590 2CH on wife's M2. Since the M2 fusebox is in the trunk, I went with Mirror taps with built-in fuses to tap into the mirror harness. I found that reflections hindering the quality of the videos so I ended up buying a polarizer for the front.
https://www.thedashcamstore.com/slip...-front-camera/
They go on sale sometimes.