If you do headers and/or high flow catalytic converters, do them before you install the kit. It will make a difference as to which tune you select when you install the new software.
I have a '12 and the only other mod I have is the ported throttle body. The whole kit works great.
12 LS M6, IPF S/C, ASA GT-5 wheels, VMax PTB
1995 Mitsubishi Montero SR
1987 Dodge Raider Turbo Project
1986 Mitsubishi Montero 2.4l FI Transplant