I am going to Greece (March) and Curacao (June). I have DJI ND filters (4/8/16) and I know it's not dark enough, plus I need a polarizer for water. Do you think just getting the PP ND32 PL is good enough to get water shots and keep the shutter decently low? I prefer 30fps, so a shutter of 60, 120, 240... I don't really want to spend $150 on the whole set.