So this proves that unlimited inhouse drone flight is possible, Next steps are to determine which lighter and less stiff cables do works as well, to gain full flight control and probably a little bit more range.
You could do your own buck converter with a Zener diode, it will probably weight less. I believe it won't reach 15g
With a buck converter attached to the drone, you would not need the thicker cables.
You are going to buy another drone, to find a drone that was lost while finding an RC aircraft.. Perhaps you need to stop flying near trees? :lol: