Just on the topic of night flying and lights......
Here, in Canada, the new Transport Canada regulations for drone operation now allow for night flying as long as your Phantom has lights.
Upon checking with Transport Canada, I was told that ' proper navigation lights ' would meet the current regulations.
The red and green lights on your Phantom meet this requirement because the rear(green) lights are flashing when in flight.
Night time flight operations is the one area where Transport Canada revised the old regulations which had banned any flying after sunset.
Now, as long as your Phantom(2,3,and 4 series) have properly functioning navigation lights, you are cleared to operate at night.
The new regulations take effect June 1st, this year.
Concerning night time flights, I would think the old regulations would be overridden by the new rules and between now and June 1st, you are OK to fly at night as long as your navigation lights are properly working.