Fatter tires better. BMX pedals would work fine. I use platform pedals with Powergrips and Keen boots. Shockless for sure. I swap my fork out each winter. If you can afford it, studded tires are so helpful on ice. They can be home made too but normal screws won't last very long. For snow, studs aren't too important. They just help with ice. For snow, wide tires with large open mud-type knobs rule. I don't find drop bars helpful. Getting a solid grip on the brakes isn't so easy as flat bars.