AtomRC Dolphin - Launches on 4S and 6S

Comparing launches of my AtomRC Dolphin
I had three flights on my AtomRC Dolphin before it met an untimely demise due to some kind EdgeTX/IRC Ghost/Horus X10S-slow-inverter-failsafe perfect storm. Initially built with a 2208 1750kv spinning an HQ 7x4.5 on 4S, none of the launches (INAV auto launches) were particularly confidence-inspiring. Though the plane flew well in the air with that power system, I didn't like the sound of the prop trimming the grass as it came within inches of the ground. So after the plane augered into the dirt and needed some repair anyway, I swapped the 2208 motor for a 2807 1300kv and the 4S 2200mAh for a 6S 1500mAh.
The first launch (and flight) on 6S was fantastic. Not a hint of doubt anywhere in the sequence. The prop does sound like it's distorting a bit at full power (HQ 7x5.4 V1S bi-blade), but anything below that and the plane just goes. I'm quite happy with the upgrade.
-- AtomRC Dolphin --
First motor: T-Motor Velox 2208 1750kv / 4S 2200mAh rcbattery.com
New motor: EMAX ECO II 2807 1300kv / 6S 1500mAh CNHL
HQ 7x4.5 V1S
Strix Rocket 65A ESC
Matek F405-WING w/ INAV 6.0-RC3
iFlight M8Q-5883 GPS
EMAX ES09MD servos
DJI Air Unit
FeeTech FT90m pan servo
Insta360 Go 2
ImmersionRC Ghost Atto 2.4Ghz Receiver
-- Ground --
Frsky Horus X10S
DJI Goggles V1 w/ WTFOS
iFlight Crystal antenna, swapped for 5-turn "Death Ray" helical antennas
Two sons running ground support that make every success and failure more fun