Finish turning this morning, it fly great, get 6 mins on Tattu 450mah (split from 450 4s) http://www.genstattu.com/ta-75c-450-4s1p-l-xt30.html
This battery is great, plenty of power, after split it about 25g on 2s
The Racerstar 4 blade prop very well balanced, it's quieter than the Kingkong 65 mm 2 blade cut down to 56 mm. But it quite easy being bend or break.
Really love this build, unfortunately I don't have dvr to record the footage
One of problem I hit with this micro F4 banggood is the buzzer active all the time after plug in battery or USB. Solving that by re-flash the FC with Betaflight Airbot f4 firmware.