Hi Etjaabi
North has the Woohoo
https://www.northkiteboarding.com/products/boards/surf/woohoo/It's a smaller WAM for girls I think.
I am taller and heavier (165cm 67kg) and at the moment I ride a 5'6'' for Perth beach break and love it.
I would go with a 5'5''-6'', max 5'8''.
If you can, try to demo some surfboards. You will know when you find something you like