Hello, My daughter is a big 8 year old. She's 4'8" 110 lbs. She's currently swinging an Easton aluminum 30/19 and hits the ball pretty hard. I'm looking to get her a good composite bat. My dilemma is what size to get her? If I drop the money on a good composite I want it to last a few years. I was thinking a 31/21 but scared its going to be to much for her right now. She's a strong girl but how much is to much. Any suggestions ?