I would shop around for another motor. 1400kv is a little high. In general the higher the Kv the smaller the prop. I bought some Emax 2822 motors for $7 a piece and they run nice and cool with 8" props. I am a very aggressive pilot and these motors can keep up with my demand, i would like a little more lift but I think I can achieve that with a lighter frame. HK has a knock off of these motors, or maybe the same motor just rebranded.
Here is where I got mine