I am planning a trip to Yellowstone in Sept 2010 for 9-10 days. Our plans are to stay in West Yellowstone the first few days making our way across & down ending in Jackson Hole. What do you all think would be better - Flying into Idaho falls or Jackson hole airport, renting a vehicle, traveling that day to West Yellowstone? How is the drive from Idaho Falls? Is there alot to see? This is our first trip to Yellowstone. All information would be great. Thanks in advance for all the help.