Line cookie sheets with parchment paper. Combine butter, sugars, flour, baking soda and salt. Mix in vanilla, egg and rum. Stir in chocolate chips, white chocolate chips and the nuts and 1/2 cup coconut. Drop cookies by teaspoonsfuls about 2 inches apart on the cookie shees. Sprinkle coconut on top. Bake 8-10 minutes until just firm in the center.