Welcome to BF. I did a charity ride there Sept last year, from the canal and it finished about 5 miles before P.Town....I was surprised by the hills. Learn YOUR pace, and don't fall into the trap of riding too fast for the first 20 miles, and hate the last 40 miles.
I'm reading a book called The End of Overeating....which is about the science of resturants and companies producing food that is engineered to make you want to, to need to eat much more than you should. In essence they produce "crack food" and dining "experiences" to create food addicts....scary book by a legitmate Medical Doctor...