Luckly. like you Tokie, I also have small feet so my toes aren't anywhere near the spokes. The trek madone WSD seems nice but I'm not a huge fan of some of the standard kit it comes with (no reason other than preference). How small is the 47? Are you able to get into a really tight aero position on it?

With regards to 650 wheels, I could see why perhaps that would be a better option geometrically, but it's a bit of a hassle finding them and getting spare bits etc. Also, wouldn't want to change my nice Ksyriums (ES) as they're so nice!