I am heading to cairns for a week in late june to hopefully get some sun and kiting, but need some advice on wind conditions. Will a 12m do (i use this in 13-24 knots), or is it worth only taking one pair of clothes, pissing my girlfriend off

, and fitting the 9m in the bag as well?
Also, i'm staying at Trinity beach, any kiting there or do i gotta head down to yorkies?
water temp and stinger suits?!?!?!?! (i am from adelaide, we only gotta watch for jaws)
any advice greatly appreciated