Depends on how much time you have and what time of day you are there. You should also account for what gate you are flying out of. Flying out of gate 2 and being at the Pier is going to make for a LONG trek.
Limited time I would do QF, Deck, Wing, and Pier F. The Bridge is a fine rest stop if you decide to walk instead of taking the people mover, but it's close enough to the Pier you can skip it. Even less time skip the QF lounge and hit the Deck, Wing, and Pier F. The food is mainly the same between all the CX lounges, but the views and feel are different, but that's also why I like to include the QF lounge as they have great view and different food/drink options to break it up.