I recently broke the shaft on my stock Outcast motor. I'm ready for an motor/esc upgrade. I understand the Outcast was not designed for blazing speed BUT I love speed and enjoying surprising people. I typically run 1/2 - 3/4 throttle while jumping but that not my thing. Please help my understand the kv rating. I like to run 6s 7400mAh 90C SMC BATTERIES.