Are the layers opaque? Because if they are you might be able to cut off the lowest layer, thus saving you some work and also making the skirt slimmer, which is the style these days. If the layers are semi-sheer, like chiffon or some georgettes, then it's not a good idea to remove any layers and it might look a bit funny to bind off the edges with that much extra satin.

Another idea you might look into is replacing the skirt entirely with a new one that is the right length and doesn't have feathers.