My 14 year old daughter has a 10 rockettech 33" -9 drop and it seems to heavy for her to get around fast enough, she is 5'5" 140ibs, our hs has a miken rain light -12 drop she loves it and has been putting the ball out to left center with it, her travel ball coach says he thinks that a -12 drop is to light that we should get a -10 or -11, any opinions?