I have the old castle xlx esc with a carbon fiber chassis limitless. Titanium front rear axles and center drive line. Spektrum 1250 kv 8s motor. What gearing and batterys 2 4s or 3s preferably do you reccomend if i want to achieve some of these tremendous launches off the line? You guys know what your doing! Keep it up! Your a inspiration for alot of rc fiends out here! Keep up the need 4 speed!!!!!💯💯👊👍🏅🥇⚠️🏁🏴☠️🤯