I wish it were not so difficult for young gifted individuals from isolated parts of the community, to fulfil their potential and aspirations. I don’t have any answers and don’t live in the US, so know very little about the resources and pathways that may be available to you. You do seem very aware of self and the challenges of your situation and have identified your immediate priorities - to study for your SATs, getting paid employment and ensuring you have the means & transportation to enable you to make the most of every opportunity.
Whilst you are starting from a relatively disadvantaged position, you have years to pursue gratifying goals and every challenge met will likely be rewarding in itself. My husband lived in a dairy shed for a year and woke daily at 3 a.m. to milk a herd of cattle to save up for med school and worked a total of 15 jobs through his years of Uni. The difficult path he had to take, forged his abilities to become one of the best in his specialty (by reputation, rather than by status and monetary gains) and he has been a postgrad examiner.
In my own personal experience, hard work and attention to detail eventually pays off, as those in senior positions do want reliable skilled people in their workforce.
