I'm probably around a 4 on your scale. I would not say that I visualize well....but I don't really try to often. I do get strong imagery during hypnagogic meditation but those come on their own.

I get strongly lucid every ten days or so now but I have a lot of work to do on stability and control. These days all of my dreams are extremely clear with some degree of blossoming lucidity in many of them.

I attribute much of my success to the work i do constantly to achieve and maintain lucidity during the day by concentrating on details and maintaining focused meditative awareness. That attention to detail during the waking state spills over into the dream state. I spend a lot of time examining my surroundings in the dream.