The wood is EXTREMELY thin, almost like paper. I believe you can stain it, it is actual wood. No cutting needed but in 1/700 scale some of the deck detail, like stirage boxes and such will lose some hight detail, not really noticable though. Do try to find one for the Wisconsin, a deck for the New Jersey, Missouri and such won't fit because each ships deck were a little diffrent.
Artwox, Blue Ridge, Pontos make excelent quality decks, Hunter, from China, is fine and the fit is perfect, but you may need to apply a little extra glue to keep some small areas from bubbling up. Their glue isn't the highest quallity but the price reflects that. Hunter will sometimes add some deck details such as anchor chain and PE hose reels.