The best scholarships come from schools. Students can only borrow $5500 as a freshman, $6500 as a soph, and $7500/year as a junior and senior. If they work summers they can probably raise ~$3k.
It looks like the kiddo in cc has a ~$15k/year budget for the last 2 years ($5k/year from your college savings, plus the $7500/year federal student loan and ~$3k from work). If you can add some out-of-pocket and/or they get a transfer scholarship, they can afford a more expensive school. Otherwise, their options may be CA public colleges.
The younger child can shoot for merit scholarships. They’re not easy to get, but easier than transfer scholarships. Outside scholarships aren’t usually much help – they’re generally small and not renewable. And some colleges will lower their grants by the amount of outside scholarships.
Do you know your EFC? What are the stats of the younger child? If you won’t get need based aid and they don’t qualify for merit aid, they may have to look at in state schools.