First off, welcome to the IBO and this forum. No there is not a minimum draw weight requirement. With your current setup, you could shoot a 250 grain arrow, at 50# draw weight and be weight legal. Further, if you choose to do so, you could go to less arrow weight yet as long as you did not exceed 280 fps. Please, check your bow manufacturers recommendations before doing this. If you go with too light of an arrow it will act as dryfiring your bow and void warranties and possibly cause personal harm. As it stands now, your arrow is about 106 grains heavy, and the reduction in weight would show significant increase in speed. Hope this helps.