I live in Texas and until this past week, it has been in the 100 degree range. I own 1 sleeveless jersey and a pair of Terry shorts and Keen commuter sandals. They served me well until this cold front and now I need to start preparing for colder weather. What do I need first?

I'm guessing knickers will be fine until Dec-ish here in TX. Shoudl I get a long-sleeve jersey, shortsleeve jersey with arm warmers? Base layers? I feel so clueless!

I also just got some Sidi Dominators so at least my feet will be warm, but I'm wondering if I'll want toe covers to keep the chill out.

Help!