That is one sweet looking bike! Congrats on losing the pounds riding. I can attest to the effectiveness of riding to lose weight too. I started six months ago and it has helped me get fit too.
I ride daily to work on a 2006 Specialized Hardrock Comp in Army Green/Black, with upgrades to everything but the frame, headset and handlebar. Slicks really do make a lot of difference. I use 1.25 Panaracer Tserv Messengers and they rock.
Love your Cannondale 25KG Cap. Rack! I have been looking for something I can use to mount panniers on my Hardrock. Backpacks are a pain to carry for long commutes.