Le Pigeon is a de-cased BMPCC4K cinequad.

See the raw unstabilized flight footage here:

This frame is meant for a 7" setup and I have tried BH 2806.5 1700kV on 5S, FPVCycle 30mm big green on 6S, and BH 2810 1500kV on 6S so far. I highly recommend the 2810 motors. I do not recommend the small 2806.5 motors because I started to develop mid throttle oscillations that got worse with a heavier lens. You can get away with Bob's big green motors ONLY if you plan to fly lenses lighter than 160g. That would be a good lightweight setup. But the 2810s are the best because although they add 40g extra weight, they are SMOOOOOOOTH at all throttle ranges and have much more authority over the quad (even with the same props) and can wrangle heavier lenses like the Samyang 12mm (245g) no problem and keep a smooth flight.

A note about ESCs, if using the 2810 motors, I found that 48kHz is better than 24kHz as it doesn't make this weird whooshing noise at low throttle and everything runs smoother and cooler. A trick for your ESC settings is to set ramp up power to 25%. This greatly reduces current spikes (as much as 50%) and causes no noticeable performance loss.

Do not cheap out on your voltage regulator! It is imperative that you purchase the recommended Pololu brand 12V 4.5A BEC or something better, because it needs to power both the DJI Air unit and the BMPCC4K board reliably.

Tuning Le Pigeon is tricky because although it's a rigid frame and you can get away with removing gyro low pass filters, you need to add a notch filter if you are using a lens heavier than 150g because of feedback resonance from the lens acting like a tuning fork. A tuning video will be made and published here when that is ready.