Starting to plan a 3 week trip from London Ontario to San Fracisco. Planning on spending 2-3 days to get to Denver and then slowing down the pace. We are travelling with our 5 and 9 year old children. We will be camping on the days we are not driving more than 8 hours. Thinking about 2 days in San Francisco. Would like to spend time in Yosemite and perhaps Yellowstone. Right now we are thinking of driving a little south of San Francisco to Big Sur and then north to the Redwoods. Looking for suggestions for routes and must sees.