Back on topic:
There are other things that you need to consider when looking at Caribbean schools as well. Caribbean schools tend to be less expensive than US MD schools, let alone DO schools that are more expensive than both. However, DO schools tend to give out more scholarships, ecspecially if you show an interest in their philosophy, and I think that your MCATS may be high enough to permit some kind of scholorship. Also, they usually discount your tuition if you are in state.
For Caribbean schools, I've heard good things about Ross School of Medicine, Saba School of Medicine, and St. George University. I had a friend in your situation who went to SGU and I'll try and get in contact with him to see how things are going.
For both DO and C-MD schools, you will need to do well on your tests to get a strong residency. If you don't think you will perform well on these, I know that Osteopathic schools have their own matching program you can opt into, which places most of their physicians at a community hospital or doctor's office. Caribbean schools have arrangements with US hospitals that may aid you in finding a decent residency.
Last, you may want to ask yourself what kind of doctor you want to be. Most DOs become family practice doctors, and if you are interested in that, I think a DO school would be your best bet (ecspecially if you have one in your home state).