Cruising Catamarans Offshore
While it may not be small (or innexpensive) you might have fun reading about Pat and Ali Schulte who are in the middle of a circumnavigation aboard their 2002 Wildcat 35MKII named Bumfuzzle (http://www.bumfuzzle.com). One of the nice things about their site is that they include their month by month budget.
I wonder what most people will think about them ... two 30-somethings that had never sailed before travel to Florida, buy a cat and learn to sail as they start their circumnavigation. Crazy? Or simply not "experienced" enough to be worried about all the bad things that could happen?