Hi - my wife and I are planning to drive from San Diego to Seattle, probably starting on the 19th of July. How long do you think we should take over it? We originally thought three weeks. But now we're thinking about shortening it to two weeks to help the budget. Any reccomendations? We probably want to spend at least two days each in San Diego, LA, and San Francisco - does that leave enough time to visit the smaller areas in between?