Hike over Rummel Pass to Lillian Lake, then West to Galatea Lakes, then (hopefully) northwest over pass to Buller Creek, then out to road and back to the car.
I am not sure if this is just a "hike" or if it is a scramble. I have not found any information on the pass northwest of Galatea Lakes yet. Depending on who signs up we can always hike up Guinn's Pass north of Lillian Lake, then over South Buller Pass to gain Buller Creek.
This would be a long day. Distance of about 25km and elevation gain of about 1300m.