Just starting to plan a trip to the west coast for approx 4 weeks starting mid April, 2013. A couple of initial questions. Any suggestions for airlines flying from Sydney to LA that have the most spacious seats (thinking mainly leg room) and what should we expect regarding the weather? We are planning to drive LA to Seattle and my husband is concerned that as it will be early spring, we will not see too much colorful scenery with regard to the trees etc? This may seem a strange question, but my husband is an avid gardener and thought perhaps we should delay our trip until the autumn - me, personally, I don't think I can wait that long! I just want to go as soon as possible. Thanks in anticipation of any tips.