I think the 'qualification' and 'experience' issues are overplayed in some discussions of candidates.
Regarding JFK - and I have a lot of good to say about JFK as president - his being a 'military hero' had pretty much nothing to do with 'experience' for the presidency. As he said himself, he didn't choose it, his boat was sunk. (And the counterparts to Palehorse back then turned it into an attack on him for being a bad leader of the PT boat). Its main relevance was as a political boost in getting him votes.
It's too easy for such things to translate into votes. Was John Glenn a better Senator than others would be because he had been selected for a flight mission?
The things is, people want to feel more sure about someone than they are able to from the facts. Consider the contest between JFK and Nixon - two men who entered Congress the same year, and got nearly equal numbers of votes: JFK was a far better president than expected of some inexperienced rich kid whose father's ambition and wealth got him the presidency, while Nixon later was far worse a president than people had hoped, despite his self-made background and 8 years as the vice-president of the very popular Eisenhower. The fact that the American people chose them equally, and were surprised by both, says a lot about the limitations voters have. But they don't like that, so they make issues of the little info available.
Hillary will be a good or bad president for reasons other than 'experience'; same with Obama; same with any of them running now. Occasionally, it is a factor; Al Gore did have a lot of experience. But a lack of elected experience didn't keep Teddy Roosevelt off of Mount Rushmore. But people need something to yack about, and the more relevant issues of character and judgement are harder to discuss.
For that matter, people would have disqualified Kennedy, Clinton and others (including reportedly Eisenhower and FDR) had unfaithfulness been 'proof' about their character and judgement, while there's no evidence Nixon and Bush (and Herbert Hoover) have been unfaithful.
So, I'm more interested in things that show Hillary's ability, her agenda.