Thinking about buying a Specialized Ruby Comp

[Eden]

Am I too heavy for a carbon bike? Will I have to baby it going over RR tracks, etc?

If big 6 footer racing guys can ride carbon you should not worry... really they build airplanes out of the stuff - its not as fragile as everyone would like to think. The thing is if you do damage it then there isn't anything you can do to fix it, but you don't have to worry about pot holes/RR tracks cracking the frame. Even when big George broke his bike last year at Paris Roubaix it was an aluminium steerer that broke not the carbon parts of the bike and that was from riding it after he'd already crashed.