UC’s are need blind meaning your ability to pay is not factored into their decision however, if you are an out of state or International applicant they are aware you would be full pay. You cannot change majors at UCI until you have enrolled and complete the course requirements needed for the major change.
@tryhard89: Race/Ethnicity not considered in UC admission decisions. UC’s give generous FA for low income students but you are still expected to contribute some amount towards your education. Run the Net Price calculator to see your estimate.
Your UC GPA and SAT scores are within range for UCI. SAT scores however are below the average for admitted Civil Engineering students (1307 for last year’s Freshman). http://www.oir.uci.edu/files/adm/IA26-fall-fr-mean-sat-by-major.pdf?R=305939
UCI is High Match school for you.