Thinking about getting daughter an Rockettech. She has been using a balanced SCN8B 31/21 synergy, but I think she might be ready for heavier bat based on how she is swinging. She is 5-5 105 lbs just turning 12 yr old. She swings the Synergy well and am concerned how te end loaded bat will effect her swing? Also, once you get use to end load can you switch back to balanced bat game to game easily?