Also, make sure you budget for a good helmet (~120) and I'd recommend cycling shoes, sure makes the long rides easier. Pedals and shoes, at least 150. More for the higher end stuff. Carbon soles are nice, they have no flex at all, which means energy transferred to pedals, not shoes. And don't worry too much about weight of components, unless you're going pro and already have 6% body fat
Oh, and a tool kit with a pump. And a computer..hehe