OK, pretty much have this beauty of a quad done. Need to set the switches in betaflight, check the motor rotation directions and decide on a better antenna.
A few pictures taken whilst building
Starting off with the 4-in-1 ESC - trying to keep the wiring super neat.
Wiring up the Flightboard and Caddx turtle V2 camera. The camera comes with a copper-clad board which I suspect is to help shield the mainboard from RF interference. So I laced this down first as the front motor wires are passing directly underneath it.