<p>The sibling is a definite plus. If you take the most rigorous courses offered it will not work against you that your school doesn’t offer as many choices. Also going outside your school to further challenge yourself academically should help. I think you have a very good chance. Ifg you are sure Vandy is for you, you can improve your chances by applying ED. Before you do that, make sure you are positive about your choice. Best of Luck!</p>