Quan Chi's uppercut is like, HYPER-FAST. He, Nightwolf, Sonya, Liu Kang, Mileena, Johnny Cage, Jax, Sektor, and Kung Lao are difficult to cross up because of those uppercuts. Definitely your best resort against cross-ups.
I wouldn't risk d1 all that much. Whiff it and you're bound to get ensnared in a combo. You could also try jump-kicking and even if that fails, you'll just be knocked out of the air and take only a small amount of damage...in most cases. If you're facing characters like Kitana or Mileena, they can combo off of an air punch, but at least it won't be as damaging.
And as already explained, the armored Sky Drop makes for an escape route if you just have to get the Hell away from there. It's advised you whiff it so that you land to the side and can get some space. Quan Chi is more of a threat if he has meter.