You might qualify for need-based financial aid, provided in part from the university scholarship funds. I believe the only way to know for sure is to apply, be accepted to enroll into the university, and then receive the financial aid package.

I would definitely check out the community college for the first two years. I think you have to be careful on which courses will transfer, and the community college may not offer every course equivalent to the first two years of a CS degree. I think you will save (potentially a lot) of money and position yourself to be more competitive for a top university.

I'm not sure off the top of my head, but you could try asking administrators at a few schools nearby. They might say on their website.