For most small game a broadhead is still the best option. I would use some cheap broadheads or some of your old heads. Depending on what you're going after you may want to use flu-flu arrows (BIG feathers) to prevent your arrow from going too far. I'd also put a footer on your arrow. The best way to put a footer is to find an aluminum arrow that inside diameter is slightly larger than your arrow's outside diameter and slide 1'' on behind the broadhead, glue if necessary. Small game shots usually means your arrow is going to hit something hard and the footer may save your arrow. Have fun.