Here are my thoughts. Seeing as how you have a Trek FX you can keep it and set it up with fenders, and what not. What you need now is a roadbike. At your size you can pretty much get whatever you want. I'm not a typical clyde as in I like the fance roadbikes and I don't want wider tires and fenders and lights and whatever else you can possiably stick on a bike. Nothing beats a true roadbike for riding on the road! I would suggest any of the great aluminum or cabon bikes out there, find one in your price range and enjoy. I too like Trek but have and will own different makes in the future.