Hiya! Ok sooo I have not yet been accepted to medical school so take my advice with a grain of salt-- but I have gotten some interviews including one at a "top" 10 med school. I would say a few things:
1. A whole lot can change during your 4 years in undergrad. Rather than focusing on how to create the perfect medical school app, focus on making sure you explore the parts of research or medicine that interest you. Also don't feel like you have to have everything mapped out right now. It sounds like the activities you are currently engaged in are a great first step, but I'm sure you'll find other things that interest you along the way that may change your trajectory. For ex, I studied abroad in Asia as well and found an interested in public health research... something I was not "planning" on doing at all before I went abroad.
2. 3.8 GPA is awesome! You should be patting yourself on the back rather than stressing about it. If you are concerned, however, I know for a fact that improvement is always a good thing. So if you have your heart set on the "top" med school then starting with a 3.8 followed by a steady improvement and a strong MCAT definitely won't hold you back.
3. Unfortunately, given how competetive medical school is nowadays even a 4.0 and a 520+ MCAT score does not guarantee anything. It's better to start to learn how to pace yourself now and be proud of 3.8 or else you're going to be in for years of dissapointments.
4. In your case since you seem super sure about med school, I would also look into some programs with early assurance agreements. For example, I am pretty sure that Mount Sinai has a program where you start medical school after your sophomore year of college and can bypass the mcat. If you maintain that 3.8 and keep doing what you're doing, I'm sure you have a good shot! Here's the link:
FlexMed Early Admission | Icahn School of Medicine
5. It's easy to get wrapped up in all this as a freshman but I think you'll soon realize that you can get there without all the stress. And for real-- a 3.8 is awesome!! Congrats!