The site is in Maryland. The house is 5500 sq. ft. and is completely timber frame except for the garage. The main roof is a hip with a few gable dormers and turrets. The roof will be 2x6 T&G. I am still debating the use of sips on the roof versus a built up system. The 2nd floor system will be on 1x6 T&G fir with a standard 2x4 floor joist system on top. The exterior walls will be 2x4 with spray foam insulation.
As I stated in the original post I am in the process of selecting the material for the frame. I have received a crash course on Doug Fir in the last 2 weeks. The only problem is that the teachers are the sales people, that are attempting to get you to buy there product. In light of that I figure that this would be an excellent place to get an unbiased opinion.I think that about sums it up. If further elaboration is needed I will be more than happy to comply. I could write a novel with regards to this project but this is not the place for that.

Thanks