YellowFlake, your assumptions - that is possibly too kind- don't give us a clue to MARGINS(that;s the bit where people make money,doh)
Anyways, you appear to be wrong in assuming that mallee and food are fighting for the same $.
I see COZ at highs and GFF at lows.....
suggest you move to Queensland where there is all the water you want to grow rice for your future needs?!