Make sure you set a high to return home safe without any obstacles like trees, buildings or houses. If they are, set an altitude of 100 meters to RTH. Just to be safe and the phantom will not hit anything in his path to return back. The phantoms are very stables, rock solid in the air. You should not have problem if you take it to a safe area. I was looking in amazon, and they have refurbished phantom 3 advanced for around $630 dollars, it's getting cheaper.
we arent allowed to fly at 100m alt anymore........