The ACT of 31 confirms the 3.4. What is your class rank (approximately, if the answer is that your school doesn’t rank). From what has been reported on the prep school thread, the average GPA there is a 4.0, and a class average of 89 is considered to be grade deflation. So where does that 3.4 place you, relative to your classmates?
I think that if you were an URM male, you might have a shot. Otherwise, I don’t think you’re going to get into any of these 4 your mentioned. Maybe Boston College.