congrats on your baby boy, I too have a low lying placenta (just under 1cm away) and so far nothing has happened and just have to have another scan at 32 weeks to see if it has moved up.
I agree that it doesn't matter how bubs enters the world and the same as you have this feeling that I will need a c/s (preeclampsia risk, low placenta and now heart palpitations) - maybe for the both of us mother's intuition is trying to tell us something???

I hope that your placenta moves up for you and that which ever way you deliver you get to hold a healthy baby boy!