If I get A+ grades then it will raise my GPA in my undergrad institution, as well as for Columbia which is where I want to go to graduate school for statistics. Should I try hard to get A+ grades or should I be content with As? Trying for A+ grades would not cut into any of my important academic activity such as research or my other classes because I already make all As, but it might slightly affect sleep and socialization.
Edit (from answer): To be clear I am an undergraduate right now.