I think UIC will only be affordable as a commuting student (not sure we know that’s an option yet).
No Illinois Promise at other schools AFAIK. Some of the state schools give extra discounts for CPS students, and things of that nature. Hopefully OP will clarify if any of the Illinois 4 year publics are within commuting distance.
I do think UIUC is likely the best financial option (need EFC 0 for Promise and the full ride, Commitment is full tuition), but Gies is a reach for OP now. Other major options where OP has a greater chance of admission include DGS (UIUC’s undeclared option as I noted earlier) or the financial planning major in ACES.