I think if your science GPA is upward trending and your personal statement/writing is compelling/you tell your story well, you may be able to crack some top tiers if your MCAT score is at what your your last practice score was at (515+).
To me, working 15-20 hours a week plus keeping up all the extracurriculars you did is very impressive, especially considering your low SES and first-gen status
I think you'll get into a Texas school, but if you are wanting to go out of state I would add any private schools that are in cities you are interested in and top tiers. My suggestions:
UCLA/Drew (if you were looking to apply to all of the Historically Black Medical Schools)
Baylor (you put UIW so I wasn't sure if that was the only non-TMDSAS Texas school you were considering, Baylor's also a non-TMDSAS Texas school)
Also have you applied for FAP? I would look into it so that you can defray some of the application costs and apply to more schools (https://apps.aamc.org/fap/