I prefer and use many shades of black..I think it makes a quilt a LOT more interesting.
Even if you are using all from the same bolt how will you know the right side from the wrong side?
Are you willing to keep track of that, plus that each black component is going up with the straight of grain, or all going sideways with the grain?
Because they will show those differences in the finished quilt.
sometimes we just have to sit down and sew