Brisbane to Bali in November - Flights

Hi all,

I'm not a very experienced international traveler and am seeking some advice on whether to buy airline tickets to Bali now or wait for a few months to see if any deals materialise.

There will be 10 of us traveling and we are fairly firm on departure date, 20/11/2016, as this is when my kids start their Uni break. I have visited the sites recommended here (Adioso, Skyscanner, iwantthatflight etc) and have a fare of $594 return for a direct flight.

Any thoughts, ideas or recommendations would be appreciated.