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)
Cornell
Columbia
UPenn
UChicago
Harvard
Drexel
Duke
Penn State
Hopkins
UMiami
UMichigan
Pitt
Thomas Jefferson
George Washington
Oakland
Temple
Rush
WashU
Stanford
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/)