Back in the '70s when I was in my early 20s, I purchased an Ameripass from Greyhound bus several times. I don't know if they still sell it, but you could travel an unlimited amount of time and miles during the time period you bought the ticket for. I traveled all over the U.S., meeting herpers and visiting zoos all over - it was great, and cheap!
There are several homestay, travel exchange groups in existence in which you can stay a few days at a member's home to get to know the area, culture, and people. Or maybe you could just meet other herpers on the way. But if you have plenty of time, and if they still sell a bus ticket in which you can stop off at places in between, it would be a great way to get to see various parts of the country in between the east and west coasts!