My only question is "why"?
I'm 72 kg and also in age.
I can windfoil in 8-14 with a 5.2 meter sail.
For wing, I would need around a 5.5 meter wing.
See where this is leading?
My g/f is a dedicated winger. Advanced intermediate in windsurfing and windfoil. She likes the simplified gear and ease of transport of wings.
I'm advanced in windsurfing and intermediate in windfoil, hate the yoga like balance needed for winging.
Lots of gear in van.