If you are interested in going on to PhD study in economics, you may want to include UCSD, UCI, and UCSC in your UC application list. These schools, along with Stanford and UCB, offer a more mathematical treatment of economics that will be helpful as a pre-PhD student. A pre-PhD economics student should also take advanced math and statistics courses as described at https://www.econ.berkeley.edu/undergrad/current/preparing-for-grad-school .
http://www.universityofcalifornia.edu/infocenter/freshman-admissions-summary can roughly estimate how your GPA compares to admit rates at various UC campuses. If the 3.8 is unweighted (meaning 4.1-4.2 after UC-weighting), then UCSC and UCI are probably almost safeties, while UCSD is probably a low match, and UCLA and UCB are low reaches. If the 3.8 is UC-weighted, then UCSC is probably a low match, while UCI is probably a high match, UCSD is probably a low reach, and UCLA and UCB are probably reaches. USC appears to be roughly similar selectivity as UCLA, but may emphasize test scores more relative to GPA compared to the UCs.
Have you run the net price calculator on each school?