I set up just a little open. Practice will take care of the distance control around the greens, also you should get different trajectories and distances with different clubs (52, 56 & 60 degree wedges)
Remember this is a shot for lots of distances. It is a great shot for "in-between" yardages. A mid-sole 6i that goes 155 and stops like a dishrag on the greens is a great shot to have on a par 3 too. I use this shot a lot from around 120 or so with an 8i and love it. Allows you to really fire at tucked pins.