Hi There,
I would consider the Airush Flow (the new one) as I have seen guys around your weight charging upwind on a surfboard and maintaining ground on a 10m easily when I have been battling to keep ground.
The other kite which I understand is for light wind kiting is the NEW Express kite, the previous model turned on a dime and I don't see why this one won't. Can't wait to demo the above 2 at kitestock

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Didn't like the previous model flow but the new one looks good.
I would try the lot and see which one you prefer, come on Kitestock.
Cheers
Rich