You could be right on the weight - I did it quickly last night. The real test will be the ride. I'm a little concerned because I live in western NC and hills are normal. I have my current bike set up with a 39 tooth chain ring and a 14-30 cluster in the rear. Just about right for an old guy in the mountains. I didn't count the cogs on the Trek, but it can't be more than 24 - the Superbe RD won't handle any more than that I don't think. It might be more than I can pedal up the hill to my house. I also switched to Ultegra dual pivot brakes and like them a lot. I hope the Dia Compes are as good. We'll see.