Straight to Carib out of high school is a bad idea for a load of reasons already elucidated in the VMD forum. I don't frankly know which Carib schools offer this sort of short-cut, but I would not recommend it to anyone I cared about.
If you are absolutely bound and determined to complete a 6-year program out of high school, please do yourself a favor and consider going to a country where that form of medical education is the norm, and do it that way. It will be cheaper (in some cases) and there will be far less of a chance of future problems with licensing, etc.
I happen to think that Ireland offers some of the best options for this, and wish that I had known about them when I was coming out of HS, but there are 6-year programs all over Europe, Asia, and South America.
"To array a man's will against his sickness is the supreme art of medicine."
- Henry Ward Beecher