colorsanding/polishing paint... been a while

Your plan sounds good to me. I just got done wet sanding and buffing my Dart. I had to use 1000 grit to start since the jerk who painted my car left me with a lot of orange peel. I had to use a pad on my DA with 1000 paper attached by Velcro or I would still be wet sanding the car. Also tape your edges to protect them.