It is better to go fro Elective Cesarean section.
Because you have high risk pregnancy
1. History of epilepsy
2. Previous Low segment cesarean section
3. Previous history of cord prolapse
4. History of Polyhydramnios
These all increase your risk of present pregnancy.
If membrane ruptures in home, Do not worry. Just go to ER. C- section is advisable, even if membrane ruptures.
Hope this helps.