Tmpfish and I did that route last year stopping at Dubbo, did it in the one day from Moorabbin, then on into Brizzy inter after Gold Coast in a single 120 knot machine. We kept a little to the left of track until the last bit into Cooly where we came in from a more westerly heading. Quite a bit of turbulence on descent into Cooly as they had us barely 1000ft above terrain in the final stages with a moderately strong westerly behind.
Have fun, it's a fairly easy flight and less stressful in terms of tiger country than heading into Bankstown from the south west over Mittagong area.