I learned to wing on the same type of board, a Naish sup board. It was 7'4 120 ltrs. It worked fine. People will tell you it's too big but, like I said, it worked fine to learn on. If you have a reason to have that kind of multi use board, they're great but you will want a wing board at some point.
Hey! Sealion range is great to learn wingfoiling if you need an all-in-one foilboard. You can start learning sup foiling too.
If you want a board with straps this one can fir for winging and has lower volume maybe it will be more versatile foilandco.fr/produit/sealion-strapped/ .