I'm looking to build a 1/5th scale RC Truggy and Its going to use a Max5 or 6 with a 7200w 890kv 180a max brushless motor running 8s instead of its recommended 10s and I'm looking for the smallest battery capacity to run for weight reasons but to still have a good 15 to 30 minute run time and the battery to never puff. I'm planning on running two 4s packs in series by the way.