ICON Suspension Stage 1

I am planning on lifting my 2013 tacoma and going with ICON stage 1 suspension kit. Now, would I need to include the leaf pack or can I get away with the stock leaf springs? If I were to replace the leaf springs should I go with the full leaf pack or add a leaf? Help is much appreciated.

 

I'm by no means an expert....and the only thing I know about the Icon systems is that I wonder if I should do them instead of the OME 886's. That being said, most people seem to recommend a new leaf pack, so that's what I decided...complet Dakar system for the rear. Apparently the difference in ride and load capability is noticably better.