I see your point, sstorkel, and I typically am not in the mode of saying "yes" to all trip ideas - but this is 3 20-something guys riding one of the most popular and easy to manage bike routes, at the right time of year, with money for hotels, and one of them has done something similar before.

Compare my positive response here, to the 60-something guy who wants to ride from phoenix to vegas in the middle of summer with no experience.

I think this is a trip that has a good chance of success and low down-side if things go poorly, since it's so easy to end a trip anywhere on the pacific coast.