The biggest problem with Iran is they might close the Straits or "Baker" it. I don't think a blockade is a good idea. Help the Iranians overthrow their government. Make the Iranian President not get a good night sleep.
Instigating an insurgency briefs well but it is another story for the SF guy that goes in there and pulls together Guerrillas to fight the Mullahs. It is possible but will the US sheeple tolerate a bunch of show trials of SF and CIA bubbas who get doublecrossed by their indig freedom fighters.