Am looking to buy a Hobbywing Max8 combo for my Kraton 4S. Which one is recommended for this truck, 2500kv or 2250kv? Also can I run the stock Spektrum 2400kv motor on the Max8 esc? Am looking for more adjustability in the esc. The stock esc seems to be hitting the low voltage cutoff much too early and I see no way to adjust that setting.