I am actually starting this trip from Washington, DC -- but I plan to pick up a friend in either Indy or Chicago. I want to do this trip in 5 to 7 days (starting from Indiana) in either mid April or the beginning of May. I am thinking of pushing through the first day or so to get as far west as I can. I want to see mountains, wildlife, and big sky as quickly as possible. Then I would like to get off the highway a little to see the towns and some kitsch stuff -- probably taking a byway or two. I would love to hit a national park and/or do some hiking, tubing or white-water rafting. Any advice on the best route? What I should see? There is SO much!!! Thank you in advance.