New build to replace fly away.

Good morning everyone. This is my first post but I am a long time viewer and have been flying a DJI 550 for about a year. I have been flying heli's for about 9 years. Last weekend my DJI 550 decided it would take it's own course and fly away and never come back. The build is below:

DJI 550
Naza-M V2
Spektrum AR8000
Fatshark FPV
GoPro Hero 3 Black
Tarot Gimbal
Batwing gimbal mount
2 x 4s 5000mah

So needless to say i am starting over. Below is what i am thinking. Just looking for opinion and suggestions.

TurnigyHK Talon Hex Frame
NTM PropDrive 28-36 750KV / 265W
TurnigyMultistar 45 Amp Multi-rotor Brushless ESC 2-6S
Hexacopter Power Distribution PCB (100amp)
PM2.6 APM flight controller
3DR APM2.6 ArduPilot Mega2.6 External Compass APM flight compass/GPS


This is what i am thinking so far.

Thanks in advance for everyones help!
 



Unfortunately I have no idea. I have flown the hex along with my 500/600 heli's at the same place for years... Never had a problem. I was just flying a east/west line in GPS mode and talking to my wife who was standing next to me. All of a sudden the hex started going the opposite way i was flying. Once it started going away from me it never came back, never had control again. I tried flipping the return to home switch (which i use all the time) and nothing. I just stood there and watched the LED's fade away...
 

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