Building dinning table from white oak with 3/4 top with breadboard ends. The breadboard is 4” wide. I was thinking of going with a 2” mortice and tenon and a 5/16 tenon. I am thinking of doing a full width mortice, no haunch to help keep the end from breaking if leaned on. Am I thinking right? I just am concerned about the breadboard breaking if lead on too heavy.