Congrats! You have several great options available to you. As long as you are confident you can manage to perform academically with all the distractions - UCSB is probably where you should go. If you got into all of those schools, your GPA and ACT/SAT suggest you can handle Econ 10A. The university wants you to pass all your classes and graduate on-time so, there are study-groups, tutors and other resources available if you need help.
Go Gouchos!
Good luck.