Looking for a Spanish Cedar alternative

I picked up a 150qt marine cooler, and my goal is to turn it on it's side, make "shelves" for the slits inside the cooler, and wrap it in wood to make it appear as if it's a cabinet.

Question I'm having is, what other wood can I use other than spanish cedar and mahogany for the shelves inside, so I have no negative effect on the cigars due to the wood. I'll be storing boxes inside with 2 spanish cedar trays I have.

thanks for lookin

[Martin]

Marine grade mahogany plywood is what I'd use. Again.

Thanks Martin, what thickness did you use?

[Martin]

1/4" for the walls 3/4" for the shelves in my walkin, you could get away with 1/8" for a cooler though.