I have been riding somewhat regularly for the last 6 months using my mountain bike on the road. I would like to step up to a road bike, and have tried several and really like the feel of the Cannondale Synapse 5 alloy. My question is will it stand up to my weight (260 down from 300). I plan on 50 to 60 miles a week and building from there. On another note what is the largest tire size I will be able to fit on this bike.