hey guys just have a question on arrow weight , i am shooting a mathews drenalin at about 59 # draw weight for 3-d , i recently started fletching my own arrows and my total arrow weight is 380 grains do you think this is a good set-up or should i be heavier or lighter, have not checked the fps yet but does anyone have any idea what you think the speed would be the arrow length is 28 inches if that matters, 3 inch vanes and 90 grain tip, thanks guys