Congratulations OP and all the rest of us lucky twin mums 
Re natural birth/c section, I was put under some pressure to have an elc and have done with it. The girls then decided they were coming like it or not at 33+5. I'd only gone onto maternity leave 8 days before and wasn't anywhere near ready - I worked for a tiny mail-order firm, Christmas was always our busiest time, and being a twit I'd agreed to see things through until the middle of January when all the returned gifts were dealt with.
I agreed to have an epidural set up so that a section could be performed quickly if necessary, and I have to admit that losing the pain of contractions was bliss. dtd1 came out head first beautifully, but dtd2 promptly flopped sideways in there. The registrar started to witter about a section, but the midwife, backed up by my birth partner (my mum, far more use than dp) said there was no sign of distress and plenty of time for the consultant to have a shufti. This was where the epidural paid dividends. The manipulation he did to turn dtd2 back to a fore-and-aft position would have been excruciating without anaesthetic! Unfortunately she was now feet first, but we went for it and out she came.
Being small and early meant SCBU for the girls, but I was discharged after 48 hours. Now being reasonably mobile and minus the section wound was really useful. SCBU only had 2 beds for overnighting parents and 31 babies in. Home was 12 miles away. I spent the next three weeks driving up and down, popping out of SCBU between feeds to buy all the stuff I hadn't had time to get. I did however get proper sleeps every night, which helped me recover much faster than most of us are allowed to. Of course we'd have managed somehow if I'd had to have a section, but I'd have had to call in favours left right and centre, favours I was going to need later when they came home. DP being self-employed meant there was no chance of him being able to take serious amounts of time off, we simply couldn't afford it.
Anyway, read up and be ready to argue back at HCPs who are scared of natural birth and multiples. I discovered afterwards that I was the first twin mother to NOT have a section at our hospital for over six months! I think if DP had been present instead of mummy I might have wavered, but she and the midwife seemed to form a good working relationship during my labour. This was fourteen years ago and I sincerely hope the 'if in doubt do a section' mentality is no longer the default, but I fear it might be in some units.
And can I just second the opinions re the Espace. It's a pile of poo. Recommend Galaxy/Sharan/Alhambra (which are effectively all the same car with different badges).