First off, you should stick to US med school. Do a post bac or a career changer post bac, take the mcat and get into a US MD or DO program. Those would allow you to do much more. Even if you do go to the carib, why would you go to a "low tier" carib school. You should stick to the Big 3 aka ross, sgu and auc (maybe you can include aua/saba but i havent heard great things about them from personal experience).
Honestly, I think most of these carib schools prey on those who aren't well informed on the process and what it entails.