What an exciting idea! Now is the time to focus on education. The plans for your cafe will likely change as you gain new experiences, so that can wait. Try to get work experiences in different types of restaurants. Consider taking accounting and finance classes in community college. Most new restaurant businesses fail, so it is important to have a strong business background first. Hospitality management is another possible major for you. Invest in yourself and later on you can invest in a particular business goal with better strategy and focus!