The 10 amp max CC P10 will treat your motor just fine. If the motor is allowed to spin under normal load, the amps will never get over the 3 amp max the motor wants. If you overload the motor with a large prop or the wron gearing, then you might damage the motor.
Go with what works for other people.

A brushless tail and a brushed main will work fine, so long as you have a brushless ESC for the tail and a brushed ESC for the main. I don't worry about AC or pulsed DC. If the motor has 3 wires, hook a brushless ESC to it.