I am doing it right NOW!...........And stock wheels with NO spacers.
"Jeep n co" stated this and is 100% right...........If you run no spacers
You risk rubbing the following:
1) Air dam (the little plastic thingy under the front bumper, unless you have the 10A then I don't know what that looks like).
2) The front sway bar
3) The frame behind the front wheel
4) The Rubi Rails
5) The pinch seam
6) The section above the pinch seam where 3 or 4 different layers of sheet metal join together (covered by rear fender liners if you still have those, and if you do, then add the rear fender liners as something you will rub)
If you are only doing this for 3 days, none of the above is super critical... just avoid full lock turns, driveways, speedbumps, mall crawling and off-roading... you know, all the things that make a jeep fun.
If you plan on running like this for any length of time, you will want to re-evaluate. Lift is "easy" way, fender trim and rear stretch is "hard" way.