OK... you're a softc*ck, but only coz you asked for it.

But, seriously, wouldn't a decent 4x3 and booties be enough? Gloves too if need be. I'd have thought that a drysuit would be OK while you're riding but a nightmare if your kite was down. (Two mates drowned wearing wet-weather gear.) Please correct me if I'm wrong.
The 4x3 I bought a while back is really flexible and easy wearing, more so than my "old" 3x2 from yrs ago... but too damn hot for anything but the freezing cold, I've even gone out without the booties just to let some heat out.
And wetsuit gloves suck if you're trying to handle lines in the water, so bow kiters beware.
BTW I'm sure this has come up before on this forum.