So my son is in a similar situation. He is a straight A student (taking 9 AP classes as well) looking at going to SLO. Like you his major isn’t offered at BYU and it is at Cal Poly (Materials Science & Engineering). He is also looking at MIT and Stanford. I’m just curious what decision you made, and if you are happy with it. And why or why not. Hope somehow you still have the email associated with this site, so you receive a notification…THANKS!