I agree with @NCalRent that getting into SDSU and even CSUSM will be tough with a GPA below 3.0. Local priority can help and even though the minimum transfer GPA for Psychology is 2.5 for SDSU, it does not mean a guaranteed admission with a 2.8. Take a look at the admitted Transfer thread for ideas of your chances.
I have also linked the average CSU transfer GPA by campus and you are below all the CSU campus averages.
http://talk.collegeconfidential.com/san-diego-state-university/2098270-sdsu-fall-2019-transfers.html
Having the AA-T will guarantee you a spot at one of the impacted campuses.