The extra length on the motor shaft won’t hurt, also, the bigger can diameter will still fit the mount since it has 36XX mounting holes on it. And, the M2C mount and brace will help a lot, it won’t bend. Ask Edough13 for more info as he has put a 4068 can in his BRCC.
You can put it in your BRCC but you won’t be able to run 4s unless you want to explode the stock motor’s bearings. Upgrade to a 4068 2400kv motor to run 4s safely. This motor.