4" ultralight walksnail toothpick

Wanted to build an efficient, quiet, sub250 freestyle quadcopter that uses walksnail. I went with 4" biblades on 1404 3800kv motors, toothpick frame, aio 20a 32bit esc/fc, elrs, and avatar 1s. I'm getting 6-8 min with a 4s 450mah battery. Betaflight 4.4 was an easy tune with just increasing P:D via osd menu and then increasing feadforward till it felt good.

I cap the motor output to 80%. Hover was around 14% which left the low end a little too sensitive for my likinf so i fly with 25% expo and center it around hover. this dramatically helps with throttle control around the hover point.

Here is onboard footage with some lens correction applied. Started to rain so I cut it early, prob had 50% battery remaining.