1990 R300 upgraded

My first and only Cannondale purchased used in 1992 and upgraded in stages across the last twenty-eight years. The only original parts that haven't been swapped are the headset and fork. These will be eventually replaced by a carbon fork and threadless headset at some point. I think I've got the whole thing down to less than the weight of the top-of-the-line R2000 from that same year. *edited in September 2019 to correct year. The original version of this bike...