With my first daughter i also had sholder dystocia it was a horrible birth, my son was born 2.5 years later by vaginal birth and he flew out, they had a doctor on standby just incase, but he wasn't needed. My son was also 9oz bigger than my daughter. Every birth will be different and just because you had it with number 1 doesn't mean it will happen again. Please do what you feel is best for you and bubs.
Hope this helps with your decision.
Snoopea