psychomub said..
Need more information.
Is the boat in good condition?
Is the rig up to the task?
Does the boat have a reliable engine?
What is your experience? Do you know the coast?
Will you have a tight time limit?
I wouldn't hesitate to sail a well found Dart that distance. Just wait for W or SW winds and go.
Probably do Iluka to Southport in one hit, with the option of stopping in Byron.
In answer,
The boat appears to be in excellent condition for its age.
Rig looks good with baby stays
Near new 4 hp two stroke outboard. approx 30 hours.
Coast is coast. I sailed an Etchells a few times from Newport to Palm beach NSW
No real time limit.
Byron is not an option as no port. If a south east wind than anchor in the lee of the cape. If really really pushed.
Thanks for you input.