<p>NMQ and SMQ have a couple singles, but I think they’re only for upperclassmen (or at least thats how it is on my floor).</p>
<p>I have a friend who absolutely needed a single for his freshman year so the administration just put him in Plex.</p>
<p>Foster Walker (plex) fits your list pretty well: its all singles and on south campus and people keep to themselves. Its also probably the largest dorm on campus and its literally across the street from the econ department.</p>