here are my 2 cents. 1. gear is king.. your leaving in march, and doing a day trip.. if you know the bike has the reserve, heated gear can save on bulky suits. This is important because your favorite gear may be great for all day adventures on your bike and configuration.. but slapping on 3 layers and a snow suit may actually very constricting and uncomfortable in the saddle. Base layer, heated gear, and a windproof layer keeps it light yet still effective. 2. make sure to have a Plan B route with waypoints that have more main arterial roads or slab to your destination or for an bailout point.. You can wish to ride the epic ride, but there comes a point where if the conditions, weather, fatigue, etc. cause too much delay or create too high of risk and you just need to get to point B. You just never know when a bridge is washed out, a county road is closed detouring you an hour out of your way.... And its cold.... And it's raining.. and damn, are those snowflakes in the distance? always have a plan B.. Be it an alternate route, an bailout point, or a predetermined lodging point. In the last 7 riding seasons, I've exercised Plan B more than I care to admit. But it has always been better than rolling in to my destination, miserable, stressed, and over fatigued way after hours.