IMHO IFE on LA is better than on QF's domestic config 767's they put on SYD-AKL route these days. Similar number of movies but LA has more other options (shows, games etc) than QF.

As for food, well if I have time (allow say 90 minutes before departure time) I'd visit the new QF first lounge in SYD and have a nice late breakfast in the dining area. No need to leave it to the vagaries of in-flight food.