Scheduling C section?

Chantal
I'll put it rather bluntly: I've had two surgeries that made it so I have a c section scarring on top of one another. In 2008 I had a cyst the size of a two liter bottle and in June of last year, the same. But the second surgery they removed my left ovary since there was a cyst inside of it. 
I'm afraid that when I do get pregnant and are about to give birth my scar will tear. Would it be better to schedule a C section? Or try to give natural vaginal birth?