long ride options- jackets, layers?
A little background- I am looking at an upcoming ride that will likely be somewhere around 5 hours in 30 degree F temperatures with a light wind. This would be the longest duration that I have attempted in this kind of weather. I am trying to figure out what to wear on top that will keep me warm enough as I seem to often be a little colder than some folks. I also don't want to be too hot and want some flexibility. If am afraid that if I under or overdress it will be a loooooong day.
I am considering lighter layering- maybe a base layer and jersey under a cross country skiing/active wear style jacket. It is some type of thicker polyester with a little fleece and huge pit zips. I am also considering a few layers such as a base layer, mid weight and jersey under a convertible windbreaker.
Any thoughts on the best option which would offer flexibility for a ride of this duration?