CSU to USC is it possible?

Hello everyone!

I am an incoming freshman at SJSU (San Jose State University) and I was originally going to CC to transfer to a different four year however I am super scared that I won’t follow through and have no place to fall back on so I chose SJSU. Will going to a CSU make it harder to transfer into USC? My highschool grades weren’t that cute either, I heard USC checks them if you’re applying for sophomore level transfer. Can I get some tips or your experiences transferring out of a CSU to a different four year?