Building a 10’ x 10’ x 8’ cube to serve as a temporary shelter outside for the holiday of Sukkot. Will hang a tarp on each side as a wall, and roof will be a woven bamboo mat plus some branches and corn stalks, nothing too heavy. Have enough conduit and T piece connectors to add one more pole per wall, not sure what would be of most benefit - horizontal or vertical support? Or 2 walls vertical / 2 walls horizontal? Just want it to be stable enough for us to eat dinner in for a week without falling on our heads! Thoughts?