Ride plan for BMW MOA rally and Iron Butt Bun Burner Gold attempt

I'll be posting my trips this summer on this blog.  My next big adventure is to the BMW MOA rally in Salem, Oregon. I plan to leave on July 13th and attempt a Bun Burner Gold, Iron Butt ride of 1537 miles in less than 24 hours to just the other side of Boise, ID.  I have a cousin that lives near there I can visit before I meander at a much easier pace up towards Salem.  I'm not sure about my return route yet but thinking about going over to Missoula, Montana, then down Hwy 89 thru Beartooth Pass, Chief Joseph Highway, and Wyoming.  I may go to the Top Of the Rockies Rally before I head on home. You can check out the IBA here . Here's my planned route as it stands right now.