I agree with Mike's comments 100%. The 763 is very spacious and, yes, plenty of cabin crew.. I think the 744 only flies to SYD once a week on either a Friday or Sunday so not much chance of changing.
Aircraft flown:F27,Viscount. EMB120, SAAB340, ATR70, 737-200.737-300,DC8, DC10,747-100,747-200,747-300,747-400, A320, A3