Wyatt,
I do not intend to be a wise-ass. . . Couple Dumb Questions. What is the purpose of this Drive? Is it just a Bucket run? How many total days are planning "currently"? July Time-frame right? Are you Sure? Never-mind! You're missing 100's of opportunities, to get off-highway, and stay off highway, and really explore. The trip to the Badlands, Rushmore, and Devils Tower. Would take me 10 Days, 2 Weeks, and I'd have to go home. I carry a 2 Terra-bit HD Drive at it would full of Video, Audio, Digital photos from my Nikon and Drone footage. The trip to, through and around Yellowstone 3 to 4 days minimum, if you're really exploring the area. From there to the Back side of Gracier, Over the Sun Road, and into Kalispell 3 to 4 days, minimum. You could sleep, eat, eat, nap, drink, explore, have dinner and lose a day in Whitefish, or Kalispell. I'd kill two or three days in greater MOAB, Valley of the Gods, Chiles, Mesa Verde, no problem. And we haven't even started talking about great food eats. . . .
I know this land mass well, let's chat.
David