Same answers as everyone else, and I would tie them together.
You can get started on the premed track without knowing for sure what you will major in, what else you would do if you decide not to go to medical school, what that would mean in terms of further higher education, and so on. None of that actually needs to be decided by the time you are starting college. Because you will know you should start taking the premed prereqs, plus some other classes that make sense for you given the college’s general education requirements, which will be enough to figure out your first term schedule, maybe your whole first year. And then you can let how that goes guide the decisions you make down the road.
Given that, you should just pick a college that has the required med school prereqs (not exactly a very restrictive requirement if you are looking at large research universities, LACs, or other such colleges), and then that also has an overall curriculum that you find attractive.
Flagship publics are almost always among the good choices given that framework, because they are usually designed to serve a lot of different kids coming from that state with different interests and career goals. Georgia, though, is one of the states which basically has both a flagship-level tech university (Georgia Tech) and then another flagship-level university (UGA). This usually happened because there is an older flagship that was founded before tech stuff really was taught much at US colleges, and then the state created a new college to do the tech stuff. In this case, UGA actually claims to be the oldest public university in the US, chartered in 1785. Georgia Tech was then not founded until 1885 (basically as part of the industrialization movement that was happening in the South post-Civil War).
One of the confusing things in situations like this is often there is not a complete division of labor, there is overlap, even if the overall focus is somewhat different. So Georgia Tech is one of the top engineering colleges in the world, but plenty of people also successfully study engineering at UGA. And both have all the stuff you would need for premed.
Still, my two cents is UGA is probably the better choice if you are truly open-minded. Like, some people end up liking to combine Humanities majors with premed. Or you might decide you would rather be a lawyer instead of a doctor, and would reasonably see a Humanities major as good law school prep. And although you can do an engineering major at UGA, you can’t, say, do an English, Philosophy, or Classics major at Georgia Tech.
So in that sense, a flagship like UGA is (by design) going to really maximize your options for majors, and alternative paths if you decide not to do medical school. Which combined with favorable in-state tuition makes them popular choices for premeds, as they rightly should be.