I've had the Insta X3 just over a week and whilst it is very impressive for other stuff I'm not so convinced for kiting. For one thing the domed lenses don't shed the water as well as the standard flat lens..or at least droplets show up more with the 360. https://www.youtube.com/channel/UCKe9oiuHi4u...
My wife had the op to repair her torn ACL, she tried to kite (strapless) after 4 months of rest and rehab but it was still too painful. It was fine after about 6 months
Good luck with the op and do as the experts tell you.