nacho QR160 departing at 18.20 during Summertime, 17.20 wintertime has only 4 departures a week. (Monday, Wednesday, Friday and Sunday). The other three days departure of QR162 is in the morning.
OP said 'Was hoping that we could drop off the bags early instead of having to lug them around all day.'. Which is why there are suggestions of baggage boxes at the Central Station and the airport.