you are a very light individual. The OXYGEN v2
(135x47cm) light wind board is an amazing Twin Tip board. Every body that has tried the board felt in love with it because of the way it felt in the water. Very alive and responsive for a light wind board.
But I don't think the OXYGEN v2 will be a great board for you because of your light weight. Since it's 47cm wide you might have difficulties in edging when the wind picks up to 14 knots. But again if you are interested to demo the board you can always test it and see if the OXYGEN board is the right board for you. My email is: email@example.comP.S. And YES, the weight of the board for light wind conditions makes a big difference if you plan to play with it and do all these tricks especially in such light wind.