Consider this, i race quads with my family and friends. When im racing my 180 class quad i get roughly 2-3 mins of balls to the wall full stick racing before my quad beeps letting me know its almost time to land. If i casually fly and hover around i can almost always pull off 8-10 mins of flight time. I use quality turnigy 4cell 1300 mah 45-90c batteries. Its all about how you fly, maybe consider flying more conservative. Buy a race drone if youve got that itch to go fast.