I had a 5'6" Skillit for a couple of years. I really enjoyed riding it. I'm 87 KG now and was heavier when I had it. I found it had good speed, nice upwind and it had a loose feel to it.I always rode strapless. For me, it was not a light wind board. I rode it with 14m kites but it worked best on 10's and 8's. I had one session on the 5'10 Skillit and for me,I liked the 5'6 better.
I sell kite equipment and we are very large Cabrinha dealer. Last year we did not stock any of the surfboards basically because of the cost. If you can get one on clear out or demo i would go for it but if your paying near retail then there are just as good options for less money. Good luck.