I'll be leaving Cody Late morning, early afternoon, to see the Little Bighorn National monument, and will need to sleep in that area that night. We will leave the next day after seeing the sights for Deadwood. Which is my best route from Cody to the Bighorn area I'm interested in? I have us sleeping in Billings, because I didn't know where to spend the night, where they may be decent lodging. Do I have it right? Thanks.