My guess, as a said before, is that the Iranians want to complicate US logistic by forcing them to fight from very far away and from limited susceptible platforms like aircraft carriers, in that way, I think time will be in the favor of Iran.Honestly not a bad plan for Iran to mobilize and push into Iraq, Kuwait, and maybe Syria by that point...
It would be hilarious if this ended up with Iran with more territory, ever closer to Israel.
If the US had reached a deal the Saudis to convert their country into a huge military base with manufacturing centers and huge stockpiles over the years, maybe the US would have some sort of advantage, but few military bases are not going to cut it.
