Quenten I like 5/4 material. By the time you flatten and plane it`s around 7/8 to 1". I've compared projects built with 3/4" to ones built with 7/8 or 1" and the thicker material gives the project a more custom look whereas the 3/4"material looks like lumber from a lumberyard. That little bit of thickness makes a big difference. You might want to include some 9/4 in there too for things like table legs.
Someone I consider a master woodworker once told me that a master woodworker is not someone who never makes mistakes. He is someone who is able to cover them up so that no one can tell.