I'm down to one I1 and I use it for everything including Saltwater Surf fishing. I fly my bait out 300 plus yards. I did buy the Mavic 2 Pro and love it.
You can still buy a Phantom 2, what does that tell you?https://www.amazon.com/DJI-Phantom-2-V2-0-Quadcopter/dp/B00P1QC43E/ref=sr_1_5?ie=UTF8&qid=1529764215&sr=8-5&keywords=dji+phantom+2
Unless you have a waver it's against the FAA regs to fly at night. I use mine in low light and it works great, I did fly about 5 minutes at night out in the wild where there isn't any light pollution and made a great night video.
Calibrate a return home point somewhere before you start and then you can take off from anywhere almost. The only risk is if you had to return home and I wouldn't want that to be on metal. I do that all the time.
It won't be long because you can see how they're cutting prices of all drones. I have about 5G's in a I1v1 and accessories and probably couldn't give them away and the same thing will happen when the new Mavic Pro 2 comes out.