I dunno, this seems like a replay of a discussion @Gumbymom and I had about TAG admission on the transfer forum where the rules they put on their website don’t seem as clear as they could be.
In this case they have on the webpage “Applicants to the program will only be considered if they have met all of the below requirements.” One of those requirements is the 4,500 eligibility index. To my reading, they have not said “Applicants will be admitted if they met all the below requirements”, just considered. It’s a moot point now since the OP doesn’t have the 4,500 points, but I’m not sure that if she gets the better test score to qualify that it means auto admit.
Some nursing programs, like SDSU, list a formula to compute a point total and then say they rank applicants and admit in order off that list. Fullerton doesn’t say this, but they don’t say “meet our listed requirements and you are in” either. So I’m a bit suspicious of there being more selection than they mention on that page, by any means they choose to use. Perhaps the index as suggested, but they don’t say that’s what they use.
I suggest the OP contact Fullerton for clarification, there is a button to email them right on their webpage.
There is no reason not to apply to direct-admit programs, apply to all you can, but if you really know that you want to be a nurse thru exposure via volunteer or paid work and don’t get into a direct-admit then keep in mind an alternative path that is increasingly popular. This is to go to a CC and get an RN degree and then apply to the RN/BSN programs already mentioned. For example http://nursing.fullerton.edu/programs/rnbsn/ . These seem to be easier to get into; on the page at http://nursing.fullerton.edu/programs/rnbsn/faqs.php they say every applicant has been accepted.
Not only that, with an RN degree via this path you can get a good job (although a BSN is better for long-term advancement and some larger hospitals might prefer it). By contrast a student enrolling at Fullerton w/o direct admit and who tries to change into the BSN program is vying for one of just 5-10 spots!! (see http://nursing.fullerton.edu/programs/elbsn/) If you don’t get in, after 2 years of college you do not have a marketable degree, and you’ll need to pick some other major.