I just finished my Pegasus 12 and I am partly done configuring it. I added an auto level servo...just fyi. I too use Simplify 3D. I'm still playing with certain settings, but after doing a calibration cube (20mm)...I am quite pleased. a couple things in my settings...print layers are at .15, First layer 95%, first layer speed 50%. infill at 30% and at 45 degrees (but this is dependent on what your printing for structural definition) and my overlap is at 20%.
Scripts added are Homing, G29 for auto level and the typical home and off on heats at the end...nothing special there. I have had great results from the SD card and from printing directly from Pronterface.