Your task is normally done or contracted out by the big log home builders. If you get the "D" logs, the curvature is on the outside and the flat side is in so you have a nice wall anyway. They are tounge and grooved all you do is to add the tons of liquid nails and the 12 inch spike.
I did this for one summer just to know how they are done. Three men can errect a 1400 square foot home with a loft in three days max. Quite an experience and one that I will never forget.