The initial plan is raw cards, but can be made to hold graded. The only factor is the quantity you want to hold. The more you want the bigger the overall footprint gets. I did a quick calculation and to hold a complete T206 set would be a pretty decent sized piece of furniture.
Here is a larger cabinet that doubles as a book shelf or ready for an expansion as your collection grows. Something this size could hold close to 1000 raw tobacco cards.