I'm going totally against the grain here but the epi is put in place for a reason. I didn't have my twins naturally but had no issue with the epi for the reason you've outlined above. I ended up getting pre eclampsia and needed a csection so that's a perfect example of the many twist and turns twin pregnancies can tack. My following two singletons births where medication free VBACS and I did push for them because I felt the risks where much lower. My personal opinion go with what feels right. From what I've heard your OB is FANTASTIC. Good luck and hoping your twins arrive with minimal intervention. Xx