Cyclone season is summer in Aus. Dec through to the end of feb primarily. However once you get inisde 5 degrees nth-sth of the equator you are relatively safe from cyclones. Although wind
may be slight and variable. ( its not called the doldrums for nothing)
With that in mind there are lots of places to safely cruise
in Indonesia that will be relatively safe from Cyclones.
Crossing to indo is quite fast assuming you are leaving from Darwin. East Timor (although still somewhat unstable) is only three days away, even if you average only a 100 nm a day.
Ambon is only 550 nm away. 5 days sail. Depending your departure time, the Darwin Ambon race
might be a nice option for you. Darwin to Ambon Yacht Race & Rally