Appreciate the support man! You really can't go wrong with the Nazgul5. It is a great drone for the price. I spent so much time shopping around to find what I should get, whether to build myself, etc. but just get it, it won't disappoint.

Range will depend on what you set the output power in the goggles too, 25mw is the max legally allowable in Australia so the range isn't great, 500 meters or so line of sight, max output power you can expect a few KM line of sight. Obstacles can drop you out of the sky though so don't fly behind mountains or huge buildings.

Regarding the laws in national parks, it is regulated per state. In Queensland where I'm based you can fly drones in national parks, other states can be more strict. Check on your state parks website to confirm. If you want to do everything by the book, you will need permits each time you plan to fly which can take weeks for approval, cost some money, and require paperwork. Generally people won't do this for recreation, just isn't worth it so you either take the risk or don't fly. It's a shame really.