My partner and I are travelling to the USA this Sept/Oct for 2 weeks. We have already booked 2 nights in LA, then we have four days left before our next destination which is the Grand Canyon where we then travel to Las Vegas, Yosemoite and then onto San Fran. We are thinking about stopping at Scottsdale, Flagstaff and Monument Valley can anyone suggest how many nights we should book at each place or shoud we stay somewhere else? (we have 4 days) and what are the best places to visit. This is our first time and we would klioje to get it right.