I am 34 weeks and have complete placenta previa. My doctor said that most c sections due to placenta previa are like any other stnadard c section except for when the placenta is anterior. When the placenta is anterior the doctor will have to cut through the placenta in order to get to the baby and that means there needs to be a sense of urgency once the placenta has been cut into.
I'm still praying mine might have moved as I've recently met two other ladies who had complete placenta previa and even had their c sections scheduled and at their last ultrasounds found out their placentas had moved enough for a vaginal delivery.