We contracted with a local man who has (and is an expert with!) a portable woodmizer sawmill.
Prior to having the mill at our place, we worked through some general plans for our house, the amount of wood we had to work with, what each kind was good for, and consulted with an expert woodworker friend (Haley Pearsall!!) and were able to have a list ready to go of what pieces of lumber we wanted from which pieces of wood. This preparation greatly expedited the processes, and ensured that we got what we needed.