It looks like the wind is very light.
What is the max wind you can fly in ?
I've flow my Phantom and my F550 in GPS mode in 18 knots (laminar wind).
Both have NAZA controllers. In "attitude" mode should handle more. And manual even more, but does require extra skills
Tip for strong winds: I get someone to grab it on landing, else it's likely to tip.
PS: there is a thread in KF on the max wind topic:http://www.kiteforum.com/viewtopic.php?f=1&t=2380978
Multicopters forums also start to cover kitesurfing aspects...