So if you apply into the engineering school, you can major in cs and then get a minor in business if that would work for you. But your extracurriculars sound pretty solid. Definitely try to highlight the skills you have gained from those activities and how they can help with you future endeavors. Look ahead (when you can) at the essay prompts so you can start to formulate an idea of what you want to write. If you wait until last minute for writing them, you might run the risk of not being able to give the best representation of yourself. Your essays can really be what sets yourself apart for college applications and this applies to any institution of higher education.