I did a walk called the Hayfield Skyline on Sunday. The organiser called it the Kinder Skyline but I've seen it listed in a publication as the Hayfield Skyline. He also swapped Mount Famine for South Head, although I don't see why you couldn't do both.
It's about 19 miles long (a few of our group used GPS's but there were slight variations in total distance walked.)
The route is roughly Hayfield - Lantern Pike - Rowarth - Cown Edge - Burnt Hill - Mill Hill - Kinder Ridge (including the Downfall) - South Head - Hayfield.
I think it's a great walk and I'd definitely do it again
Have you done it Harry?