Im new at this so please go easy:

I'm trying to find a way to use my miles going first class from IAH to SYD. I know Qantas and ANZ are near impossible to get seats on, so thinking SQ. I'm not familiar with their award policy, but being flexible as far as origin (JFK, LAX...), whats the best way for me to get seats? I can transfer points from SPG or AMEX, or pretty much anywhere else (I have plenty). Any suggestions?