I think you are making a big mistake and I wish I had seen this earlier, you should have posted in a less hidden forum.
What state are you in? Yes if you take college classes you are a transfer student. For some it is only one class but for others it is less than a year. You need to be careful about where you take classes.
University of Phoenix is a for profit school, not a non profit like Catech or MIT or UCLA. It is highly unlikely that they will accept these credits for transfer. You need to take classes from a Regionally Accredited non profit school at the minimum.
To get into a UC your best bet is to start need to start with a California CC, they have a proscribed pathway to complete UC requirements and you can look up what classes transfer easily, you don’t have to wait and see if they will take any. Caltech has a transfer agreement with Pasadena City College but it is still very hard to get in. I would say you have zero chances with university of phoenix credits it is not reputable or rigorous enough.
There are more credible online programs. One student here recently reported getting into a top school as a transfer from University of Maryland University College which is online. There are also members compiling a list of reputable online colleges here
http://talk.collegeconfidential.com/financial-aid-scholarships/1797405-list-of-inexpensive-reputable-online-college-ba-bs-classes-and-degrees.html