Building the World's Lightest Brushless Whoop

How light can a brushless whoop be, and what would it take to build one? Let's find out! Build details, links, and PID tune below...
Parts:
- BetaFPV F4 1S AIO FC v2:
- BWHOOP65 Frame:
- RacerStar 0603 16,000KV motor:
- Better motors you might want instead:
- Gemfan 31mm 4-blade Props:
- The camera/vtx I actually used (not really recommended):
- The newer camera I mentioned (might be better?):
- RENY M1.4 4mm screws:
- FrSky antennas (for making custom monopole fpv antennas):
- The real PH2 connector (90-degree version):
Betaflight 3.5.7 PIDs (work-in-progress):
set p_pitch = 50
set i_pitch = 55
set d_pitch = 45
set f_pitch = 440
set p_roll = 40
set i_roll = 45
set d_roll = 40
set f_roll = 390
set p_yaw = 70
set i_yaw = 90
set d_yaw = 0
set f_yaw = 100
Full CLI Dump: