How about Jenolan caves to below Nellie's Glen, Red Ledge pass, Narrow Neck, golden stairs, mt. solitary, Kedumba valley/farm, Kedumba road, King's tableland rd., Rocket Point, Charles Darwin track, finish Wentworth Falls. You could do this over from 4 to 6 days. For an even bigger trek, continue from Wentworth Falls via Bruce's Walk to Katoomba airfield, Pitcher track, Rodriguez Pass, Bluegum Forest, Buracorain, Victoria Falls, Mt. Vic. Add 2 to 4 days. Enjoy.