Looks nice.I would use a denice wood to start such as walnut , cherry or something like that if I was just starting. I like to keep pedestal at 1 inch and use a 3/4 forstner inside that. sound board 1/6 to a 1/8 off playing surface just depends what you are using for surface. Thickness on the side wall are roughly 3/8, bottom around 1/8 or so. playing surface sits on 1/8 ledge. Sound board needs clearance of a toothpick from side wall that is what I gauge mine with...Take your time and enjoy that is the fun of it and make up what you like.
Hope this is of some help...Jeff