Thinking about getting a new/ used light weight road bike. My old Raleigh has served me well.

Hello good folks, I have been itching for a new bike for a while now. I have used my Raleigh road bike for almost 5 years. It’s aluminum frame, light and rides perfect. No issues with it bjt I just have been itching to get another bike, preferable carbon fiber, lighter weight and more aerodynamic. I saw this bike on facebook market and it seems to be a good deal. It’s $1700. What would you recommend?
Specs –
– Cannonadale Super six Evo.
-“Lightly used Super Six Evo Road Bike. Very minimal cosmetic details. Perfect Mechanically.

Few Upgrades:
Fizik Saddle 150mm
4iii precision power meter
105 crankset
105 pedals
Continental tires “