At your level and weight I would reccomend a Carve 151.
You can use sail sizes 6.5, 7.5 & 9m.
This will give you a wind range of 10/12-25knots approx. Down the track as you improve you could add a Carve 121, which will be a great combo with your 6.5 and have a nice crossover with your 7.5/151/121.
There are also lots of footstrap options to help your progression and cover flat water to open ocean sailing.
Isonic 97 2013
JP Speed 50 2014
Severne Reflex 4 7.0,6.2,5.6