QF Rostering
Spoke to a mate of mine recently (737 driver) who is regularly hard against the CAO limits. Overnights vary depending on your seniorority for that month from 0-3 when senior (if that is what you are bidding for) and about 10-15 when you are junior. Again, that will still get you up against the limits.
767 drivers are a slightly different kettle of fish. Slightly less stick but that is due to the less efficiency in the flying. Takes more days to do those hours too so more overnights etc. Most junior 767 pilots fly rosters that are almost purely domestic and can do 60-80 sectors in an eight week roster. Overnights generally average about 22-30 nights away in the 56; again, depending on seniorority.
Hope that helps. With luck, a QF 737 driver will happen along to firm up those figures. Until then, take 'em with a grain of salt.