I'm building a small timber frame cabin for a friend on Salt Spring Island, B.C. My friend is currently milling Douglas Fir timbers from the property for the project. We are looking for some advice on the minimum reasonable amount of time to 'season' the timbers before we start the joinery. We are comfortable with the consequences of shrinkage of green timber on the frame but are concerned about the impact of twisting after we cut and raise the frame. We are thinking 6-8 weeks. Also, what is the best way to store the timber during 'seasoning'. Thanks.