Get good textile touring pants with inside rain liner. Wear long johns under that. Merino wool is better than polyester. Cotton no good.
Snowmobiling gloves. Full leather with liner (ie. thinsulate).
Heated grips have further increased my comfort. I got heat demons, mid price range, took a while to figure out the wiring with a relay etc. I used the taillight wire (blue I think) to activate the relay. Switch is on side plastic cover beside keyhole for passenger seat release.
Teknic Freeway jacket:
Teknic Freeway HP Jacket - RevZilla
Has gotten the greatest reviews and they were right. It is a warm, totally waterproof jacket. Best price for a touring jacket of this quality you will ever pay.
Balaclava x2. One over head, the other at my neck. My helmet didn't come with a chin curtain and they are not out for my model yet. As soon as they go for sale I'm buying it. A simple piece like this prevents wind buffeting under the helmet which causes alot of cold air to free your face off. My CL-17 helmet is not good for wind reduction. It's worse than my 15 year old AGV helmet.
My AlpineStar touring boots are fully waterproof and are just enough to keep me warm, but I will definitely need sole warmers. Heated socks sound good but I doubt they will last long and will get smelly quick.
I would also like to get heated gloves. Gerbing doesn't have waterproof gloves so to me they are useless. I found these and think they fit the bill. Price, quality, and BUILT IN heat controller with 3 settings:
12V Heated Grand Touring Motorcycle Gloves by VentureHeat