Much of the above aside, I'm also trying to estimate the costs of a possible couple of months on the road in the Western USA - WA, OR and maybe CA too. I don't live in the US so don't really have a feel for daily costs of living. I'm not an idealist, a purist, or a hobo - well, my niece thinks I am but what does a Paris Hilton wannabe know? However, as it happens I am a vegetarian - well, sort of as I do eat fish. On this subject it might be worth checking out the website and/or book by the Scotsman cyclist Mark Beaumont - The Man Who Cycled the World. He holds the world record for that and was a vegetarian until he hit the Middle East. He was on a 6,000 calorie per day diet so had to adapt. He also more recently did the Alaska to the bottom of South America route. Not many vegetarians in S.America I'd guess, but he survived and even slept in bus shelters and by the side of the road too when he had to.
But I'm not trying to emulate him. Don't have the muscles or sponsors anyway, so it's all self financed. However, after the costs of my flight and buying the gear I'll need I'd like to keep my travelling expenses below $50 a day. Does that sound do-able including perhaps a camp site with showers? On that topic, how much do US campsites cost on average for cyclists.