You many end up with a somewhat bare tank. I am sort of in the same boat. Set up the region biotope tank for someone. The real question is how authentic you want to go. I found that you can not get anything from the Bahamas. If you broaden it to a Carib region, you may find limited livestock that is found in all most places. Compare the reef surveys done in the area you are interested in. Aside from the fact that fish are very limited, corals are not being shipped in at all.
Live rock was a pretty big problem. Of all carib places I was able to import live rock frock from the Dominican. The rock came in great looking and loaded with life. Because there was so much life on this rock it cycled hard (extreme conditions) most of the life died. We brought in rock from the FL keys that were actually shipped in water. 200+ lbs in water, the air cargo per weight bill was scary. The rock did come in very nice and had lots of little coral hitchhikers. For the most part there was lots of Oculina and Porites. Tons of sponges and many lived.
Some of the common fish there I was able to obtain from throughout the Caribbean were foureye butterflies, queen angel, atl tang, chalk basses, porkfish, royal grammas, tiger gobies, neon gobies and couple other small fish I am blanking on.
Good luck with the project. It isn't impossible and even depending on the recourses, keep in mind that this tank will still look bare in comparison to a pacific reef aquarium you could put together.
