Marker or Brush

I think is time to start the next level on my munny.
I'm planning to trace the color pencil lines in black, using a marker, or a brush.
I think I'm preferring the brush idea, I trust more the acrylic paint, and the line will be more interesting, and more control in the details.
However I find hard or almost impossible to erase the pencil lines on the Munny. I used mainly caran d'ache watercolor pencils... they are supposed to be soft... mmm... looks like I'll have to paint over the pencil, I have no idea what will happen when I start adding color.

But you know I'll keep you posted.