Buck was nice enough to send me log data from that motor. He was running a 104g 22x10 Mejzlik E prop on it and it runs about 239 RPMs per volt, unloaded. So that means you have a lot hotter wind than the 210Kv Scorpion lists. This means that a 104g Mejzlik 22x10E is asking a lot from that motor on 10S, and you don't have many 12S options for the motor at that Kv.
Enterprise7 is thinking about using the 22x10 E-L Mejzlik, which is only 46g, on the 195Kv (193 RPMs per volt, unloaded), with 12S, which is probably the next best option. I personally think the 22 inch props to 7000 RPMs is a tough gig for the motor, but we'll see how the lighter prop hold up. All the data I've seen with the motor shows that it sags battery voltage right away with the 22 inch props too, so let's see what the 46g 22 inch prop does.
If I had that motor, I'd probably run a 21x10 PJN or electric beechwood Falcon on 10s, which would produce about 7000 RPMs and 91A. This should be about 23.5 pounds of thrust, so it should be okay to about 13.5 pounds, which is probably doable if you try. If you fly like I do, you can probably get 6 minutes with this setup from 2x 5S 4000mAh batts, which may save you about 9 ounces, depending on the batteries you use.
