I think tambour doors is your solution. I suspect the weight of a bifold door on the flipper hardware will be problematic. You can make the tambour look like a solid slab when closed but it is a lot of work.
Jason
Jason Holtz J. Holtz Furniture
3307 Snelling Ave. South
Minneapolis, MN 55406 612 432-2765
-- Jason J. Holtz Furniture 3307 Snelling Ave. South Minneapolis, MN 55406