When I was your age I wanted to do things like that, but everyone always said I was stupid. Then I left home, travelled the world, climbed Everest, explored Antarctica, sailed across the Pacific, and had a great time. I still regret not starting earlier because of the bad advice I got.
I had a Mirror when I was a kid, and it would NOT be the kind of boat I would choose, but I guess it is possible, and you can still learn from failure.
But ... you need to plan, train, and have sufficient resources to ensure safety
. You need a safe boat, wetsuits (or dry suits) safety gear
, radios, GPS
, choose the weather
carefully (island hop), lots of practice, and a larger boat with a motor
for support. To do it properly and safely and be self-supporting I guess it could cost $5,000 for fuel
, boats etc.
Please don't be the kind of idiot who does it cheap
, gets lots of publicity, then has to ask for a rescue
. That just makes it harder for the next person. Do it right first time, and don't tell anyone before you go, as the authorities won't like it, the newspapers will be hoping for disaster, and there is a high chance of failure.