Bali - ugh, sitting up all night on the way home with not even a blanket. no, anyway this is a terrible time to buy any Virgin ticket, any air ticket in fact.
Assuming that "in Oct" is a misprint, you mean you want to fly soon but there's no flight to Perth with 2 biz award seats till Oct. Actually the same applies to Bali.
Now, we're expecting the offer of double SC's from about 30 Jan, then you'll be able to pick up 110 SC's for a short flight in paid biz... and come back on Rex.
Also expecting Virgin's paid biz fares for Feb onwards - which had been heftily marked up for 2024 - to be marked back down to earth by the end of Jan.
Bottom line, if possible don't buy any Virgin tickets before 30 Jan