I always base after fully completing the model, after this I apply sand/grit etc with paint not glue. Once this has dried, I paint the base, ink and drybrush.
As I'm using paint, I can paint right up to and around the feet of the model using a small brush. I tend ti base in sections and dip the base into the sand/grit as I'm going.
The oldest and strongest emotion of mankind is fear, and the oldest and strongest kind of fear is fear of the unknown.