I got my first "real" bike just before my son's first birthday. I have always been a road bike person, so there was no question in my mind about that. I bought it and the child seat at the same time. My large child outgrew the seat quickly, so we replaced it with a Chariot Cougar 1. Now he's using an Adams Trail-a-Bike. All of them have worked fine witht he road configuration. I will say this: you may want to consider a touring or light touring model; that's what I have, and the slightly longer chainstay means I can use a kickstand, which has been helpful, although clearly not necessary. The other thing is, that while I agree with other comments taht the skewer hitch is wonderful (it is also an option with Burley trailers, apparently), I had a bit of trouble with it on my road bike. The skewer that Chariot includes has a very long threaded side, and the nut on that side (the non-quick release side) is open so you can screw it down as tight as you need to. However, as it is designed to fit anything up to crazy-wide mountain bikes, it stuck out frighteningly far from my hub. I ended up using the skewer from my wife's hybrid on my road bike, and the Chariot skewer on her bike, although there are clearly many other solutions as well. The overall moral of the story is, while I never took it up the Alp d'Huez, I also never, in the four years I've been trailering, had to get off and push.

You'll be fine -- enjoy!