First gen, coupled with low SES, is indeed a hook at many highly selective schools.
We do not know that OP has any affordable in-state options.
You’ve done well, so you are fortunate that your stats will enable you to get into some great choices. However, a number of schools don’t guarantee to meet your financial needs.
If you’re not happy with your in-state options, you’re going to have to rely on Questbridge for other school choices. Otherwise, I don’t know how you’re going to pay for some of your elite choices.
The vast majority of elites meet full need, and it’s likely OP would receive a full ride from these schools…if, as it seems their EFC is 0. OP may still need to come up with money for travel costs, health insurance, and incidentals, and some of the elites do include the Federal Direct Student Loans in FA packages. The most difficult part is gaining acceptance to the elites…even thru Questbridge.