Put the super on. Sounds like they could swarm. If you're using ten frame equiptment, the standard rule of thumb is to add a super, if they have seven of ten frames drawn.
I'm first year too, started from packages, and possibly have had an awesome season because my two packages both gave me a super of honey so far, and they have two more on them now. Hoping they make enough to help out my two swarm hives with stores come winter.