School hols, and also winter up in Europe will make it a tight one, ie, limited availability.
As VA does not fly that far now, it relies on partners to do the flying, ie, to SIN and onwards.
If partners won't release seats to VFF, its a no.
One way might be to transfer points from VFF to KF, yes, as a large number of a "loss" (35% less gain), ie, not 1:1 between the 2, but that might be the way to go about it.
Not that I have the answer, maybe pay the rev fare, and use rewards points collected for another shorter holiday in the SEAsia region, outside of school hols/Christmas/snow season in the northern hemisphere.
Or buy a cheap Y fare from Aust to SIN, and then see about using KF rewards points to get further up.