Three books you need and the rest you will figure out yourself.
100 Magic Miles of The Great Barrier Reef.
Noel Patrick's "Cruising the Curtis Coast" and
Maritime Safety Queensland's "Beacon to Beacon Directory". Most of the regulations are contained therein.
If you have a larger size porta potti and a 10 litre plastic paint bucket with clip lid for back up, the boat cops should deem you compliant.
Raw sewerage is legal to dump in open waters but may be required to be masticated first, whoops, I meant macerated.

If you miss Middle Percy Island about a day south of Mackay, you will have missed something you will not likely see anywhere else in the world.
You are still likely to have sou'easters in September so carry plenty of fuel.
Which breed of 30 footer will you be sailing on??