Is getting into a top-tier medical school realistic for me?

It’s really too early for this question. My suggestion would be to revisit this topic after two semesters of orgo and physics, as that’s usually “the wall” most pre-med students need to overcome. If your GPA doesn’t tank with orgo and physics, then you would seem to be on-track for any med school, provided you also have a top MCAT score. Best of luck your sophomore year!