I agree with the above answers that it depends on the type of clients who are at your club already, plus the type of clients you want to attract. Since you have a small club, you could always poll them to see how they currently use the gym, whether they’d actually attend classes and what types of classes they’d like.
Some places are cardio driven, i.e. Brick House Cardio club that is all classes and virtually no machines. Other places like Planet Fitness have no classes at all.//