Good ideas on an extra bag. With my small frame bike I only have one frame mount water bottle. So, I added a handlebar mount. No more handlebar real estate. However, I have a very small handlebar bag from years ago I can actually mount off my seat, over my seat bag which has all my equipment, like a small pump, spare, tire irons, and cleat covers.

Otherwise, I could frame mount the pump as I have a mount on my other bike and ditch the cleat covers. That would give me a lot of room in the saddlebag.

I have no arm warmers up here, forgot them at the other house. I also have no knickers that I like. I have one nice warm pair but they are slippery and drive me nuts on longer rides. So that is out. I do have a rain jacket I really like. My wind jacket is now kind of large.

I am leaning towards knee warmers with shorts, a jersey and the rain jacket. Iffy on a base layer. I only have long sleeves. I do have a wind blocking top that I could put over my jersey and skip the jacket.

Odds are it will take quite a while to warm up. I always use wool socks.