I am curious if it's possible to use MP and ArduPlane to quickly lay out a rectangular grid ("lawnmower pattern") for autonomous flight for geo-tagged images for feeding into Pix4D. I'm a big fan of ArduPilot and MP on fixed wing, but also a recent new fan of Phantom 3/4 and Pix4D Capture for autonomous grid mapping. It's so easy to design and execute a mission for geo-tagged image grid, from Android phone or iPad, using a <$500 P3S. Though that whole ecosystem is fixed-altitude, and quads can't cover the 1,200 acres I want to cover, with altitudes ranging between sea level and 400'. If I use ArduPlane and a MyTwinDream (massive endurance), can MP design a grid mission where the altitude at each photo is consistently about 120' above local terrain?