Regardless of what floor option you choose you'll need metal decking as the underlying structure. We use Structural Deck for all our metal decking needs. They offer next day pick up or 2-day delivery to Indiana, Ohio, Michigan, Illinois, and Wisconsin.
Do you just need a stair? Go to Stair Zone and design your stair today. You'll receive approval drawings in 2 days and your stair will ship 2 weeks after approval.