Sure I could go up in Kv, and I think that the next available motor of a similar size will have around 1500~1550 Kv. The reason why I don't like that idea is twofold. With e-power we are always looking for overall efficiency and for the same airspeed, a finer pitch prop will require more power. The 2nd reason is noise and to go from 10K rpm to 12K pushes up the noise factor. The neat thing about e-power is that we are not stuck with the problem of trying to keep an IC engine happy with prop pitch. We have governors that can hold the rpm and this lets us juggle stuff like motor Kv, esc size, battery size, and available props like APC that really don't cost much.
Coming back to Justin's Tutor II, you can certainly use a bigger motor and prop with bigger batteries than you need, BUT the thing to remember is that you only need "enough" power and not excess power, because all you are doing is adding unnecessary weight and that creates a snowball effect. An efficient system will mean that you can use a motor, esc and battery pack that will land without being really hot and that the battery will have a nice reserve left over, so that it can be used for many good cycles. I just looked at my other post on my Newtron and saw that I wrote that I had 18% left over after a flight. I checked my notes and I had 20" at low altitudes and 24% up where I live at 5800 ft. ASL.
So Justin, I hope that you will keep us posted on what you end up with in your Tutor II.
Keith R