Bob, I use special motor made here close to us, it is 1400rpm/V, but important is internal resistance, it is only 150mohm ... that large 10" prop loads it lot, so the resistance is very important thing. It is 32g heavy with back support and prop driver (2 screws directly in the body). I you will choose from cheaper chinese production, you will end up little heavier, but several guys here used Emax CF2822 with success, but its weight is 45g in the same configuration. So that is why that my model has little more area than ususal F3A indoor.
TO RPM is 4500 so that is the power which the motor must deliver on ground. I use 800mah battery and I need ~550mah for 5 minute long flight. Lap time on 5m long lines is 4.9 - 5 s