Crankin, I think I'm much like you minus the wool sensitivity, and unfortunately I don't have much good advice ...
It's a very thin line for me between freezing to the point where I will never warm up no matter the exertion, vs. drenched with sweat. In fact, I don't think there is a line ... if I'm not so cold that my performance is impaired, my fingers and toes are numb, and I'm risking a pulled muscle,... then I'm sweating.
+1 on the ventilation, +1 on having wind block only in front, and I'd say if at all possible, have an extra layer (especially hat and gloves) that you can put on whenever you stop. Hat seems to be the best way for me to add a major temperature regulator that I can easily pull off and stow in a pocket - especially if I'm doing something *other* than cycling which involves removing and re-adjusting my helmet.
Presence or absence of hat seems to be good for a difference of at least 10°F ambient, maybe as much as 20°.
Last edited by OakLeaf; 01-22-2011 at 03:56 PM.
Speed comes from what you put behind you. - Judi Ketteler