Smaller MindShift backpack with this list. Something like the Horizon or Panorama may work. These bags, including Professional, have a waist bag that rotates to the front for those moments you want to get a shot. You can store the Mavic and other items in the top portion. I liked this feature a lot without having to remove the backpack and quickly capture the moment.
Hello, and welcome to the forum and soon Australia !Most likely the mavic, 3 batteries , controller, potentially small dslr, wallet, and water bottle. I'm sure there are more things i am not thinking about.