Hi sorry for the late reply.
gate aster se is my first choice cause it's has GCS(gate control station)which let you could change lots setting by your phone or laptop(rpm, shooting model, trigger travel etc...)
And compare with those Chinese made Gel blaster mosfet (t238 ldt etc...)There is no any significant advantage perun has. So I will choose gate for function and Gel blaster mosfet for economic.
About the motor, check ads in AFUK you could find cheap brushless motor??