Here is a goal: To create a wooden bench table that hangs on a wall,

Which way makes more sense to accomplish this goal?

Pick your answer from: + attach metal hinges to a wooden backboard that is attached to a wooden table base via metal bars that are screwed into the boards.; + attach metal hinges to a wooden backboard that is attached to a metal table base via metal bars that are screwed into the boards.;
attach metal hinges to a wooden backboard that is attached to a wooden table base via metal bars that are screwed into the boards.