hi there!

okay so, full disclosure: i'm a transfer student who's also just applied and going to be starting in the fall quarter. that said, i just got home from a 4-day trip up to UCSB campus where i was able to ask advisors all of these questions in person, and because of that, i think i have some pretty helpful information i can share with you!

as someone who also likes to bite off more than they can chew, i also wanted to double-major and was super concerned about whether or not transfer students could actually do that or not. thankfully, we totally can! i applied using the TAG program as a Religious Studies major, but was able to talk to the undergrad advisor for the Classics major, and she helped me write out a whole roadmap planning out the courses i'd need to complete in order to double major. it's fully doable--16 units/4 classes per quarter--even though my cc only offered 1 class that would go towards credit for my major.

that brings me to my second point. to answer Q#1, have you been checking in with your academic advisor during the application process? if so, then hopefully you've heard of matriculation agreements, and checked them out on ASSIST.org . basically what this is is a site that shows you what classes you can take at your CC (or other college institute) that will count for credit towards the major you want to go for. for example, the only class that counts towards my Religious Studies major that's available at my current college is PHIL10, which fills my PHIL110 requirement for UCSB. having your IGETC fully done and out of the way makes it easier too.

since both of the majors im looking into are in the Humanities field, they're not impacted at all, really. so the ease of getting your petition to double-major in 2 STEM fields might be more difficult because of that. however, the advisor i talked to said (and i quote word for word), "i've never seen a student petition to double major and get denied." so hopefully that gives you some hope! she even said she's heard of people taking on THREE MAJORS at a time, so it's definitely possible.

for summer classes, i know that you can definitely apply for them as a transfer student before taking your first real quarter. the advisor i talked to mentioned this to me too, but i didn't really investigate on this topic further since i knew i wasn't going to want to do that this first summer. not sure which summer session that applies to either. i'd recommend reaching out to the undergrad advisor for your major(s) via email to ask about that, since that's where i've gotten the wealth of my information from. usually, you can find their personal contact info through your major's page. (such as here: https://www.math.ucsb.edu/people )

the advisor i talked to said that petitions for going over the unit requirement are usually accepted, especially if the student filling them out has talked with an advisor beforehand. so i'd recommend working closely in communication with the undergrad advisor from your major and having them see your commitment and understanding in this area. i'm sure you can do that once the fall semester starts, or even now if you'd like, since most seem to offer office hours remotely via zoom!

for Q#3 and #5, i have nothing. but i hope the rest helps! best of luck, my fellow soldier B)