Have you talked to any admissions recruiters at the Texas schools or participated in TMDSAS Office Hours? We don't know much about your purpose as a physician or any specific geography within Texas that would make you desirable. What feedback have you received from your prehealth advisors?
Yes, a slightly higher MCAT I think can help but holistic review matters. I don't foresee that you would get screened out from the information you provide, but I don't get a sense of your impact on your campus aside from tutoring, so I'm not sure how well you would interact with classmates. In short, I need more to compel me to want to interview you.