Since you have not included your location, we have no idea which plants will thrive in your region. Your best local sales will be what people know will grow on their
land. You could get more for the exotics, but they would require more time and effort to grow an a wholesale level. Even if you baby them along and sell them locally, you will get few repeat customers if the plants do not perform well on their land.
Try to stick with the plants that perform well in your region. It will make your job much easier, and be the best income in the long run.