Whilst the reported range of a 787-900 is around 14,000km I don't think they could carry a commercial load that far given the enroute fuel requirements, [ ETOPS/EDTO] and fuel required on arrival. The only aircraft I am aware of operating those distances at present are 777 extended range options. Do QF have these? The 787 is not the accountants Dreamliner, due to the current cost of fuel and its initial capital cost.