My husband and I are planning a round trip from seattle in sept 09. We are in the planning stage, we've booked flights to seattle and home again from seattle, we have 21 days. I would like to stay in seattle 2 nights at start, san fran 3 nights, 2 nights seattle at the end. I have a rough idea that i want to travel down to santa maria on hwy 101 staying at the madonna inn as our turning point, then back up inland taking in some national parks inc yosemite and crater lake. I would welcome any ideas places to stay things to do etc. Do you think this trip is possible in the time we have?