I really wanted a Cannondale (CD) touring bike too but was well aware that an Aluminum frame is much stiffer than steel and therefore less comfortable over many kms. So I looked at their other models, ones with suspension to soak up all those little bumps. I just bought a Silk Warrior 700 which has front Headshox suspension so you can still use a low-rider pannier rack, plus seat post suspension so your butt doesn't take a beating. I haven't ridden it much yet but I think it will be a nice tourer. It has the usual braze-ons, 700 tires and long wheel base - all good for touring. I did change the gearing to the same as their touring bikes with 28/38/48 up front and an 11-34 rear cog set. You can order this bike with either drop handlebars or straight with bar-ends. Your LBS can make any other modifications you desire. Check out their website for more info.
Cheers
Ben