My option 4 here seems to me like it could work.
I haven’t seen your back bot, but I assume it includes a winch. If you then also have a way to periodically stop the winch, or also if you don’t, you can clamp the kites to the lifting line. Then in lower winds perhaps you’d space out the kites so they all see clean winds at altitude, and in higher winds you’d do the opposite, or whatever is best. One idea would be to also clamp the vase to the line and also lift it with some of the kites still inside in higher winds. If the wind speed changes you’d land and load a new profile.
I don’t know if this is simpler and cheaper though, if ArduPilot for example now or in the future would be able to keep a smart rotor in the air.