EDIT: A year later and more tweaks. I am using a GoPro Hero 11 now, hefty thing but beautiful video. I was originally running emuflight and changed to betaflight due to more GPS rescue related options and I started pushing long range more. The furthest I've gone with this thing currently is 7km, max altitude 2.4km (in the mountains). I've got two 21700 4200mah P42A homemade 6s packs that I run in parallel (it's hefty at 1.7 kilograms). I get easily 20 min of flight time out of that with the hero 11 and some serious altitude gain, speeds are averaging at 70 kph most flights. I've hit 150kph on multiple occasions.

Here is some more recent flight footage with the hero 11:

Perfect for propless superview video and long range. With temps currently -10 celcius and below, flight times are a very comfortable and COLD 8 minutes (2600mah 6s lipo stabilizing at 3.7 volts per cell post flight) while covering 8.8 km in that same flight. Running the 1500kv variant of the ECO ii 2807 allows for cruising speeds of 100km/h at half throttle (data straight from flight logs). The GPS, immortal T, session 5 (now hero 7 black with tbs nd filters), and fpv camera mount are customized. In 5 celsius weather I pulled 10 minute flight time, 10 km flown with the battery at 3.68 per cell upon landing. Also combined the mount for the sma and immortal-t antennas and slammed the fuselage on 25mm standoffs instead of the 35mm that it came with. I extended the antenna mount so this thing can take 140mm long batteries and have a lower CG. Farthest Ive taken it out so far was 3.1km on 500mw vtx output power and could have gone farther.

Flight footage! (from session 5)

EDIT:
Older parts being used:

• Hobbywing xrotor micro 45a 4-in-1 esc
• TBS Unify pro 5.8 V1

Other gear:

• Modified Eachine EV800 with a diversity receiver module, goggles painted white. I'll post a diff build for them.
• Skyzone Cobra X V2 with custom face foam, running TBS fusion VRX, truerc x air mkii, TrueRC x^2 air, and a TBS omni
• Radiomaster TX16S removable antenna mod with Frsky Infinity 2.4 antenna and VAS diamond antenna for crossfire running edge tx, rubber switch covers, folding stand.

Dry weight: 572g (UPDATED with hero 7 mount and shorter standoffs: 578g)
AUW with Session 5: 1,034g
Updated AUW: 1,072 g

AUW with Hero 11 and two 4200mah Liion batteries: 1,700g lol