Not sure of the size and volume of the Oak you are wanting to have felled. But it may be worth creating a cutting list of all the timber you need and approaching you local sawmiller, you may be able to exchange your timber in the round for some kiln dried/seasoned Oak from their stock.
As far as I am aware and from the small amount of green woodworking that I have done (Sweet Chestmut and Oak roundwood) the frame, Shingles and Cladding can be made from Green Oak. therefore only the flooring and pegs would need to be out of kiln dried.
I usually start with scale drawings then produce a cutting list and go from there, It would be worth working out the volumes of wood you have and the value etc.