I would be hard pressed to call route 4 a 10c/d. It's leadable at 5.9. The twin crack route, route 3 is possibly a 10a for its very fun mantle to thin horizontal. Also between route 2 and 3 is a very fun arête to very high reach with crimpy side pull up face at 10d or 11 a, or bail into uper portion of main crack and avoid the reachy move.
If anyone has questions let me know. Have spent the past 6 years digging very deeply into the west river valley climbing.