It is obvious that Iran wants us to retaliate militarily. We may still do that, but increasing the sanctions and building a coalition will be the first steps. No rush. I can recall when I was in the Kingdom prior to Desert Shield/Storm, there was a lengthy period of time getting our forces arrayed properly before responding. Trump is sending addition personnel into Saudi Arabia, no doubt to install more Patriot batteries, improve surveillance of Iranian forces, and arrange the logistics to support whatever military options we may choose. It is the calm before the storm.
Unlike what happened during the Gulf Wars, there will be no invasion of Iran. If a military response is determined, we will take out their command and control infrastructure along with their military capabilities. We may hit their oil refineries and port facilities, but I doubt that will be the case because of the long term impact on the economy and the Iranian populace. We want to hit the leadership and the military and incur as little collateral damage as possible so as not to alienate the Iranian people, who are demonstrating daily across the country against the regime. Time is on our side hence the Iranian regime's trying to goad us into acting militarily, which would galvanize the country and deflect from the increasing domestic opposition to the regime.
I would be patient while readying our military option.