hi izzieboo,
i can empathise. I ended up 2 weeks late, induced, epidural didn't work but the midwife did nothing about it (didn't believe me!) 11 hours later screaming agony for 5 they resited the epidural. Instant relief, but only 1cm dilated so i asked for a CS at that point.
I'm not sure on the statistics re complications after CS vs natural childbirth, but i'm sure someone here will: that will give you better information so you can make a fully informed decision.
One thing i will say is that my CS was FANTASTIC. I had no complications whatsoever and my NCT pals all had tears and problems after their vaginal births- one has just had to go for surgery (baby 5 months old) to cut and re stitch her vagina because they stitched it up too much. So, it isn't all CS bad, VB good, but then you know that already.
If you really decide that when the time comes, a CS is what you want, i would explain that you had a very difficult birth the previous time and that you are terrified of it happening again. That has to be a clinical reason to consider the CS from their POV. Just be very insistent.
You may decide you want a half way house: ie, if you go into labour spontaneously before your DD, then to try and go the vaginal route as you are less likely to have complications than if you were late and had to be induced. This is what my SIL did: her CS was booked for her due date. She didn't go into labour spontaneously and ended up with the CS.
But it sounds like you need to have a chat with your DP for a couple of reasons, but at least to get him onside. Good luck