I have two of the Babolat Aero Pro drives strung with Lux. Savage and tourna grip. The rackets are five grams apart (310 and 315). I want to not only match these rackets but increase the weight of both rackets. I am fourteen years old and can keep up with my dad who is a 4.5 player. Since I am new to modding rackets I was wondering what a good weight would be. I was thinking around 11.6 or 11.8 as I like the weight of heavier rackets such as the new head speed and babolat pure drive roddick. Thanks so much.