I am hopeful someone will be able to give guidance on the correct way to do my project. I am building some laundry room cabinets with the face frame and doors out of walnut. I'm doing a shaker style with full overlay. I am going to use 3/4 plywood for the cabinet boxes. But should I use walnut plywood or should I use maple or birch plywood of the box construction? Also what material should I use to build the brawler boxes? I have had some family members tell me that I am just wasting money using the more expensive walnut plywood. I don't mind spending the money, I just want to make sure I use the correct materials and not be foolish. Thanks for all the help and it will be greatly appreciated.