We're planning on renting an RV this summar (early June) for a roadtrip. I was thinking of going from San Diego to the Rocky Mountains and back, with stops along the way at Las Vegas, Zion and Bryce and on the way back at the Grand Canyon. Just wanted to get some feedback on what would be a good timeframe to do such a trip - since we're renting, I was hoping to not do a trip longer than 10 days. Another other tips and suggestions for this route are welcome! Thanks.