The height/weight thing is a non issue as others have pointed out. It boils down to this- what do you ski? Here are your answers, in my opinion:
"I only ski park, and within the park I hit a lot of rails/boxes and some jumps"
- You should get the T Hall.
"I like to ski park and send it off big jumps, but I also leave the park sometimes to ski trees/steeps/etc"
- You should get the AR7. Stiffer flex helps for this kind of terrain.