I used these connectors on my last 2 3inch builds.
Just finished the latest build, here are some pics.
Planning to fly it with the Gopro attached to the bottom, just for making video, not for doing stunts.
Used parts from my old Eachine Aurora 100(flightcontroller,receiver,camera,vtx and the batteryplug).
It slowly died, first not showing the OSD and then not arming at all anymore. Think the 4in1 ESC module got fried.
Not flown it yet, but everything seems to work ok on the new 3inch/130 size build: