Hi, I'm relatively new to woodworking. I'm planning to build a "farmhouse" style dining table 72"x 40" or so. Table top will be roughly 2x8 or 2x10 knotty alder (wife wants a thick tabletop). She also wants breadboards on either end. I was planning on 5" wide breadboards on either end (suggestions for different widths welcome).
I was planning to make my breadboard M&Ts using a plunge router and dado blade. My question is, given the thickness of the tabletop and width of the breadboard, what should the dimensions for my tenons be? Was thinking 2" long, 5" wide, and 1" thick based on what I've read. Suggestions?