Congratulations on getting to the point of planning! How long have you been engaged? I got married in Turks and Caicos this past October and it was wonderful, exactly what we had wanted and hoped for. In my opinion, you can't go wrong there! Grace Bay Beach is breathtaking- do an image search- it actually looks even better in person which is hard to imagine! I stressed out a lot about choosing a location because I wanted it to be picture perfect and still affordable for our family and friends. At the time we were starting to plan, I did a flight cost comparison of the islands we were considering and flights to T/C were quite a bit lower than the rest and much less than the USVI or BVI. It cost only slightly more than Mexico and while we love Mexico, we did not want to have our wedding there.
Once we were able to zero in on Turks and Caicos as the destination, I insisted that I could not relax and commit to it without a site visit so we planned a long weekend and checked it out. Once we experienced the island, all doubt was gone. We chose Grace Bay Club for our wedding and honeymoon based on the great, central location with plenty of restaurants, activities and less expensive lodging options within walking distance. I contacted several local wedding planners before the trip and got the best, most helpful response from Luise at Nila Destinations. Before we committed to anything or spent even a dime, she took us on a half day tour of a list of resorts I wanted to see and they were truly all fabulous. I feel there is a resort there for every budget and they are all immaculately kept and on the same, pristine stretch of beach. No one tried to "sell" us anything or push their location or services on us, we were very impressed with how genuinely helpful and informative everyone was without ever making us feel the least bit of pressure to sign up or commit to anything.
Hope some of this helps. If you have any more specific questions, I'd be happy to share more. I sure don't envy you planning a wedding in your last year of nursing school- that is intensely stressful itself without adding so many big decisions and plans in the mix.