I've used the RS Racing 6.7 with an isonic 101 from a friend and it's a great combo. Be sure to use a mast with the right bend curve, like X9 or X6, that's really important for the RS Racing. But then, the windrange is huge.
But Belskorpio, too cold?? Your from Belgium right, I've had my 9th session since february last week in Holland, it really isn't too cold anymore!