First Year Need Advice

I am a first year life science student at McMaster. For context I am from Ontario and did well in my first semester getting a 4.0 gpa. Obviously my end goal is med school but honestly seeing everyone on this sub im not optimistic about my chances for Canadain med school. My backup plan is to apply to the US for MD but I would need 2 orgo courses + stats and 2 English courses. Is it worth it in upper years to take all these courses that definitely will hurt my gpa. Im just pretty lost and need advice, thanks!