If one of them has already sprouted in the refrigerator, it's probably ok to plant it now, although it might grow really soon. But I'd hold off planting the others until December. On the other hand, you might want to check with a plant shop in your area more familiar with your warm climate.

Yes go ahead and plant them now. The refrigerator over the long run will desiccate or dry out the bulbs. As you describe the bulbs as small they may not bloom for you, but if not planted they will be even smaller soon. Al