I'll wait and see on whether your Iraq prediction holds true. Nevertheless, Israel-vs.-PLO would be a natural part of the plan -- protecting our flanks, as it were. We would expect the Palestinians to act as Saddam's surrogates in the region, in order to distract or dissuade us from continuing.
As for Iraq, I suspect that the method of choice would be hunter-killer teams (already inserted), calling in airstrikes on Saddam and as many of his doubles and underlings as possible. Also, no large-scale invasion by U.S. forces, but rather a set of liasons with indigenous resistance forces, as in Afghanistan. And of course airstrikes transform any sizeable group of the Republican Guard into hamburger.