Heated liner and gloves are the way to go. Have a set of heated socks that I have used maybe twice in the decade I have owned them.
With liner and gloves I have ridden in the teens with no worries.
"People in this country sleep peaceably in their beds at night because rough men stand ready to do violence on their behalf." George Orwell
2007 950R Super Enduro
2006 Buell XB12X