I used Brightside also.
My BMW 2 tone job
I only primed bare metal and areas I used filler on. The rest of the car was just DA'd except where the clearcoat was failing, I tried to take all that off down to the base color or primer. Went on like a dream. I sanded between all but one of the subsequent coats as I felt the next coat went on better. I like to give the coats a little something to grab onto, and the 'dull' sanded finish also makes it easier to see where you've painted and where you haven't.