You keep hyping Iran and their capabilities. Let's see what their Order Of Battle looks like, shall we?

Not sure what your point is - the hypothetical we're talking about is how Iran responds after their air force and navy (except maybe the subs) have basically been destroyed. It assumes those forces had minimal capabilities.

Iran's military is generally considered to be one of the most powerful in the region based on the capabilities of their land forces. They have a pretty sizable army.

Yes, if the U.S. has six months to optimally redeploy assets from around the globe and the cooperation of all the other Gulf States in the area, we can turn the road from Basra to Kuwait City into the road of death. Redeploying six aircraft carriers to the Gulf will do that (to say nothing of the British Navy, which basically wrapped up the Iraqi Navy for us). But without that preparation? Without all that build up? It's not like we stopped Hussein from taking Kuwait in the first place, after all. And in another difference from the Gulf War, having other global powers (notably China) supporting them in their response to the unprovoked aggression of the imperialist Americans, since (again) the U.S. won't be doing this with the imprimatur of a UN Resolution?

Iran can't hold Kuwait, but the purpose of the attack wouldn't be to conquer the country - just destroy the U.S. military presence there in response to the U.S. attacks.