I had a similar dilemma with DD3, although there were no medical issues involved. With DD2 I went from 4 cms to her on my chest in 15 minutes so I was very worried that we wouldn't make it to the hospital on time - we had moved house since her birth and are now an hour from the hospital.

DD1 was induced and while I have no regrets about her birth, DD2's subsequent spontaneous drug free delivery was by far the better one.

In the end, I decided against an induction. It seems to be the general consensus that third babies are the ones that keep you guessing, so I was reluctant to opt for an induction when chances were good that she wouldn't be as quick as her sister. DD3 took her sweet time - hind waters broke around 8am but I didn't go into established labour until 6pm that night so there was plenty of time for the hospital!

Good luck with whatever you do.