Here are a couple of useful links, since HobbyKing doesn't have much engineering information on it. The calculator application (second link) can also be reached from the Neu site directly.
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Stall current is hard to find for these motors. I can tell you that if you put too much load on the motors, the battery or controller will probably go first. That is, within reason of course. I lost a couple of battery packs because I had a prop that was a little too big.
You may also want to find an operating sensorless motor to trial test, so you will know how they behave. That test motor does not have to be the same size as the one you are anticipating using. They can start from a dead stop a little differently. It is usually explained that they don't "know" which way to turn at the instant power is applied. On a scooter, that might not be a problem, as a very small push will get them going right away.
And finally, the open, outrunner motors do need cooling. At 10 m/s, that might not be a problem, but as has been pointed out, you won't be going that fast very much of the time.
John