why burn those motors in hot summers when you can use them in cold weather.
you've heard them fast but they get really hot. cold weather solves it :)
there are other hot motor setups too like 4s 1105, 1106, 1107......
i don't know if the setup works with 12a boards, i just don't want to risk it and use 20a board. but you can try with 12a if you want to find out

tachyon 4s 1108 5000kv ( or any 1108 motors )
betafpv 20a whoop board
hq3x3x3
70g 4s batteries

betaflight 4.1.0
PID is more for someone who doesn't know how to tune at all, or it's a starting point.

11/11/19: i just tried it 4s today, so no time for video yet.
this is 3s 850mah flight.