Son and I are going 3rd season Colorado this yr, Craig-Meeker area first time and probably only time going don't want to break the bank but would like some info on clothes. Getting Merino wool undies, but wondering about coats and that, in Iowa for Dec-Jan deer season I wear my brown duck insulated bibs and coat,mittens, sweat shirt and stocking cap none are water proof do you need a water proof outfit will have a rain suit along. TIA