I was really glad to read this well-thought out, articulate post 
UCSD has an excellent music department, their composition grad program is world-renowned, and many innovative composers attend. In the course of your studies, you will be able to do electronic and computer work, study classical, jazz, popular and world music, take several composition seminars, and do performance. If you haven;t already, look at this list of courses (including the upper division) http://www.ucsd.edu/catalog/courses/MUS.html
I think this covers all of your interests and also offers a chance to stretch and expand. And, since it is a music department rather than music school, you will have a chance to sample and explore other academic areas as well.
This journey, if you don’t mind me calling it that, takes patience and when you look back, you will see that undergrad in many ways prepares you for further studies rather than an immediate job. In other words, frustrating as it may be, when you want to get right to it, undergrad years lay a foundation and then you can go to grad school and focus on what you really want to do, and where. (There is a reason USC has film scoring only as a grad degree.)
Composition at UCSD is very well-regarded, and I think you are in good shape. Your portfolio and recordiing got you in, which shows you have talent and potential, and I hope you can enjoy that fact and look forward to everything that is ahead of you