Need advice for Jap Carrier Decking

I am building a Zero launch dio and am considering decking material. I am considering styro or something more wood dominate. What do you think?

Advice and suggestions are needed

Im not an expert on Japenese carriers, what where the flight decks made from? I have wood in the back of my mind for some reason. If they are wooden i would use balsa.

From photo’s of early war carriers they appear to be wood.
Thanks for the tip