Ok the cheapest thing to do would be just buy a pico board and use that to replace the 4in1.


Or if for some reaosn you want to go with seperates heres some suggestions-

For the main motor -
Pixie 7P 7amp ESC

For the tail motor -
GWS ICS-100

Gyro-
Eflight Mixer/Gyro (would probally work fine)

I'd go with -
Futaba 190