Launch sites will have to be taken out first and that can be problematic.
It’s a long flight. Sub capabilities notwithstanding.
Even still........
Depends upon when they start deploying functional warheads.
Flight-wise, they’re at max range even with extra fuel tanks.
Maybe if the Saudis allowed refueling tankers. Of course they fear Iran’s mullahs as well.
Logistics shapes possibilities, you are quite right.
The Saudi’s cooperation is problematic. They have taken the first small steps. It would be in their interest but is a reach.