Take the MR chute down to Iceberg Lake. As the chute begins to flatten out look for use trails heading north (left) up to Whitney-Russell pass. If you don't see use trails then just make your way through the rocks and rubble up and over Whitney-Russell pass. From the pass you look north (right) and you will see the south-right side chute up Russell. At the top of that chute is a steep chimney to climb.
Is this the end of your HM to WP trip? Are you going to have an overnight pack during this? If so you might want to drop your pack at Iceberg lake then head to Russell and back.
Another option would be to descend the MR from the notch all the way to Upper Boy Scout Lake. Drop the overnight pack and then slog up to the Carillon-Russell saddle and climb the east ridge up and back down to your pack/camp.
