The problem with your plan is that KLM does not fly to all of those places from Australia
For instance : SYD to HKG on KLM would be via AMS, and that would thus count as 2 awards.
Award 1 SYD - AMS - SYD (50000)
Award 2 AMS - HKG - AMS (50000)
The only place you could fly in asia to is SINGAPORE, for 30000. that is the only stop that KLM currently has between SYDNEY and Europe.
Sorry to burst your bubble