Hey, its no biggie that you are not dilating yet. I never got Braxton Hicks, was never dilated days before birth and am never in labour more than 5 hours.
There is no reason why you cannot expect a 'good' birth. You are going to have to participate to some degree and fear shouldn't be the reason you front up for a c/s.

Have you discussed how the scoliosis will affect your labour with a professional? There may be specific positions that will ease/facilitate the birth. There are epidurals available, you might want to request one sooner or later.

You have a bit of research to do my friend! Scan these forums, there is plenty of info - don't go off our opinions - decide through your knowledge of the process cos you will feel alot better about whatever you decide.

xoxoxo