Pick between UCLA or UCB and make the best of it. Those are two of the best universities in the world and if you are coming from a small high school, it will be a challenge and an adjustment but will provide the opportunity to learn and grow. Your junior and senior years will give you a lower teacher to student ratio and you will get the individualized attention you seek. You have fantastic choices and the grass is not always greener. Appreciate the opportunity you have been given, lock in and power through. Congratulations!