I too wanted to do the 30 Unit Option but for a different reason. Simply because I saw it as the fastest way to go from LVN to RN. Here's what I found out, some of which you may already know.
If you do the 30 Unit Option you will only be eligible to sit for RN boards in California and will only be able to practice in same.
You will have no terminal degree (no ADN, or ASN) and you will not be able to go on to get your BSN etc. Ever. Meaning, once you do the 30 Unit Option, it can't be undone, (at least that's what two different school's Nursing Depts. told me).
Knowing this I STILL
wanted to persue the 30 Unit Option - but could not, for the life of me find a school that would allow it. Even community colleges in my area that had it listed with their nursing progams only offered it on a "space-available" basis. And space was never, ever available. Every nursing advisor I talked to had horror stories about people who did it and then either failed the NCLEX, or got married and then couldn't move out of the state with their spouse because they couldn't work...etc. They all had a hundred reasons why LVNs shouldn't do 30 Unit Option programs. (If they really don't want us to do the 30 Unit Option, then they shouldn't offer it, IMO, but maybe it's a Community College funding thing, I don't know.) I applied anyway (with excellent GPA etc...) and was told...you guessed it, "space wasn't available"!!! I then applied to the same school's bridge program (they call it advanced placement option) and got in.
Anyway, back to the question in your post:
My school lists the requirements as follows:
LVN nurses who wish to take the 30-unit option program must have a current, valid California LVN license and must have completed Microbiology 12 and Physiology 1 or 12 with a grade of C or higher. Students who qualify for this option should make an appointment with the Nursing Department Chairperson for additional information. 30 unit option placement is on a space available basis.
Other schools that I've looked into are the same. Micro and Physio pre-reqs, with 22 subsequent units of core nursing classes.
In the long run, I guess I'm glad that I didn't do the 30 Unit Option because now if I want to say travel to Hawaii and work, I can. But hey, if they let you jump back into your program where you left off - then go for it! And if not, and you can find a 30 Unit program in your area that's affordable, then go for that. Good luck, and don't give up!