A flat repair kit and/or spare tube, and a bicycle multi-tool are essential. I believe a mirror is essential on a road bike, (sorry Wildwood). Remove the reflectors, unless you do any riding after dark. Forget the rain gear - if it looks like rain, stay at home - if you get caught in a sudden thunder storm a little water isn't going to hurt you. You might look into a small messenger bag in lieu of the wedgie, but a light wedgie bag will do just fine to carry your kit.