KV is the maximum rpm that the motor will produce (with no prop) per volt of battery power.

Here goes the calculation:

KV X Voltage = max rpm  (487 X 22.2 = 10,811)

Since we need to put a prop on the motor to fly that pattern we usually take 80% of the max rpm to be what we call "usable rpm" (10,811 X .8 = 8,649). Note, the 80% is an approximate value that we normally use to come close to the loading that the prop puts on the motor.

In my considered opinion that's way too close for safety. If you are planning on using a KR governor don't as you will have absolutely no "head room" for the variable gain to work with.

That's a humongous motor for stunt -- 1500W implies a 12 pound airplane if it's the continuous rating.  Even if it's peak power it still implies a 9 pound airplane.  (That's going by the 7W/oz continuous, 11W/oz peak rule for sizing electrics, which applies if you're using something like a Hubin or a Renicle timer).

That doesn't mean that it won't work for CL stunt, but the motor will be much heavier than it needs to be, and will probably be noticeably less efficient.

I'd see if you could trade it for a motor more in keeping with your model weight (unless you intend to fly a 10 pound stunter), with a higher Kv.

Maybe try an 13-8?

Anyone try high pitched props?  Seems pretty common in RC-lectrics.  Should turn better, and be more efficient.  Probably be lacking in acceleration though???