i am using a Phantom 3 Professional and Litchi. I want to program a mission that flies a perfect circle with a 3000 foot radius focused on a central waypoint. I don't want to use obit as I understand it has a radius limit too small and I want it to be repeatable, always starting and ending at the same point. The idea is to fly the same large circle around my 185 acre farm in different seasons. I've tried to draw a circle but can't get the distances and curve lengths perfectly symmetrical. Is there a circle function other than orbit?