I have a brother and sister that live in Sanford, Florida. Lived there once myself. Enjoyed it, but wife and kids preferred the outback of NC.
With the yankee accent down there, it will take a lot of effort on your part to learn to say yall. Just keep practicing and it will eventually become natural, Maybe you can print Clem and Bubba's dictionary from the other post.
Try the test in another year to measure your progress.