Should I attend Santa Clara University or Cal Poly San Luis Obispo for business?

Well it depends if you want more of the prestigue in business (though cal poly is fairly well recognized), and which is most important to you. It sounds to me like you've made up your mind and want santa clara though, as if you look at your description, you seem more excited about it. By saying everything about the campus seemed perfect that is great, and it seems like it may be more up your alley. I will say that Cal Poly San Luis Obispo is a great school though, I know 2 people who go there, one is in engineering, another in liberal studies to become a teacher, and just adore it. If you love hiking and such you'll like it there as well. Good luck!!