Wirraway, I'm not sure when a manufacturer quotes an aircrafts range what sort of reserves they are using, (can somebody answer this?) however, I would suggest that the following routes may be a bit far, SYD-RAR, MEL-RAR and BNE-MNL unless they were to have a stop enroute. I'm not too sure of the local geography out there in regards to suitable alternates, it may be worth having a look at a map. Also, I may be incorrect here, but I would suspect that the fares would be reasonable expensive to provide a sufficient yield too. Another issue would be does Virgin have ETOPS approval and if so, how many aircraft would be ETOPS approved as it is a different maintenance schedule for ETOPS approved aircraft.