If you're running X_plane and want some ortho files, I have the files I used when I did the route for my first leg of my world trip
http://btfg.space/Ortho4XP/Milkrun/Milkrun Brisbane_Rockhampton.rar
it uses zoom 13 for water tiles, zoom 14 for general and zoom 15 around airports. a good zoom level to balance quality and size. Download is 1.4 GiB and contains each tile on the routes
until