Driver lies

I am waiting for a set of new AP2 12 Irons to arrive. They were ordered because they had to be bent 3' and the store could only bend up to 2.

 

I am 5'6" and am wondering in I can enhance the Drivers Performance by adjusting the lie to be more favorable for my height and swing. My adjustment card says that it maxes out at a .75 degree change and I was just wondering what that meant and whether or not I can utilize my drivers ajustablilty to improve my preformance with it ?