Convert file to vector

I have a sign that I'd like to be created in vector format. The total board size is 240" X 96" but the actual sign doesn't have to be that big. I'd suggest a small border of at least 2". I've included several files that are meant to help the designer recreate the sign. I'm NOT wanting the designer to make the sign exactly as it is drawn, as I really am not too concerned with the initial design. If the designer thinks changing the design will make the file easier to create and scale, then I'm open to ideas. Note: The sign will be in the front yard facing the street, so the sign will surely get dirty from traffic. The image should contain little or no white background as it will look dirty.