We have a 31 inch outside door that we will no longer be using as an entrance, though I want to keep it as a possible escape route in case of fire. Right now it has 3 concrete steps leading to it. We want to get rid of the steps, put a wrought iron railing ion front of the entrance and replace the door with french doors. Are there French doors that would fit into this space because it is so small? Any iseas for the railing?