I would suggest shael the bow, use Nosferatus coil- i think thats the ias belt, socket your diadem with 15 ias jewel, armor with 15/ias, use some good crafted of rare gloves giving at least 20 ias and that should give you enough ias to hit 7 fps possibably, if not then id suggest getting new gear. Mavs set isnt very good.