I had an C.sect for DS cause he was breech. It was known in advance, so even though it was recommended by all the maternity professionals, it was still called an 'elective'. I felt that I had many people for years look and think lesser of me because of the way my son was born, and that was for a situation that I tried to change and he just didnt move! The 'jokes' about me being too posh to push etc and vibes i felt from others that I was not as 'real a woman' as them .
So, I think if your more at peace with a c.sect, then great. Do your research (as you have been) and talk with your OB about it. But be prepared that you`ll still probably encounter those who will make you feel like your decision was not the best etc - but stick with knowing why you made the choice. Its you and your family and no one elses business at the end of the day.

The one thing that I didnt know when I had my C.sect though and have only found out now with this pregnancy, is that if you have a c.section this time and plan to have a number of other children, it will impact on your birth choices etc for them.