Yes it will be enough to work. The kit is complete, but it is highly suggested to upgrade your SS while you are at it. Depending on what your budget is, I would also recommend looking into getting new spring isolators ($100 for the complete set) possibly a small spacer for it to sit level (depending on what drive shaft you have), and longer front end links for the front sway bar to go back to its original orientation ($40 zone links).....But yes you can just install the kit as is and will be fine. These are just suggestions. I did all of these things when I put my IRO kit on.
IRO 3"/ Rough Country 3/4" spacers/ Bilstien 5100's
JK take off's and 32's