Good summary. Rand is perfectly positioned on Iran, in contrast to the war party. By making clear he is 'less' interventionist than the full-tilt hawks, but not like his father, he immediately parks himself as middle of the road, yet is the defacto 'peace candidate" compared to everybody else.
This becomes a bigger factor later in the year as the Iran agreement is finalized, and the choice becomes more starkly peace or war. Will the war party risk starting yet another conflict, this time in the face of a public that supported an agreement 2-1, and by so doing put Rand in the best position to win, as the peace candidate? Given the record of 2007-2008 and 2011-2012 (Ron Paul's candidacies), the pattern of the establishment avoiding starting a war so as not to create a path for a Paul victory, should hold once more. Thus at the very least, the Paul candidacies have helped keep us out of war with Iran for almost a decade.