I think a great bike that is aero and an aero helmet is a solid choice. Aero helmets have a much more significant effect on aerodynamic than aero wheels do.
I'm a huge corima fan. I really want to get a wheelset eventually, but man they are pretty pricey.
regarding the ceramic discussion, yes it is cheaper for shimano but compare sales of shimano to corima. Plus ceramic bearings need ceramic cones as well to really be utilized.