Beef
Yes - unless young and foolish and will walk in a heatwave anyway. Of which I have been guilty on several occasions.
My last big walk was a foolishness the other way - walking pole to pole in in blizzard. Which as you know is atually a somewhat hard expereince to achieve in Oz. And the only major differenece in gear was carrying thermals, beanie, gloves.
In that area spent most of my time on the Jenolan side. Wild Dogs, Mt Solitary circuit, and some surprisingly untravelled walks on the other side of the Katoomba ridge. I remember walking up the Jenolan caves river and "schools" of trout scattering away from me in the shallows. Had to walk in the water as the old Paddy Pallin trails had long since dissappeared
Though friends did Kanagra Falls and really enjoyed it.
Caried a sheath knife on my first walk and a SAK on every walk