I would strongly suggest you regester your art with the Artery. If you place it at random you may find you are too close to art that was registered and you will be asked to move it. Also, many art projects will be burned, some like Megatropolis, in a grand fashion. While you may appear to be a far enough distance from a large project, you could still be within their burn perimeter. The Artery is open now and will be open from 9:00 am till late afternoon, with a closed lunch/meeting break hour around 1:00 pm. It is a simple process and even if you plan to burn your art, the paper work will not take very long.
Those who think they can and those who think they can't are both right.