They don't seem terribly desperate to fill the position. If that's true they can probably play a waiting game to find someone who matches what they're looking for.

As for the salary line, either it's true that they're not a "terribly money-motivated group" and thus you should feel free to ask for whatever you want and if they really want to hire you they'll cave. Or, it's true that they aren't willing to pay the salary you expect and negotiations won't last long.

Either way it's really nothing to get worked up about.