Personally I’d hire someone to do the work for you if you feel you aren’t comfortable. You can really screw things up with Cinemcraft. N value is just the amount of frames between I Frames (Inter Frames) in your GOP (Group Of Pictures). M value is the frames between your I Frames and P Frames (Predictor). There is also B Frames(Bi-Directional)
How are you viewing your picture? Through Progressive outputs or interlaced? What kind of monitor?