Maybe those with more experience can comment, but don't swarms have trouble staying togather and even building comb if they are missing their queen?
Personally, if it were me, I would check back in a week or less (4 + weeks from capping qc's..should be starting to lay by now) and if nothing then at that point I would combine with with one of your small hives.
Rather than lose the swarm hive you can really give one of your small hives a good boost, and then perhaps split that later.
Check carefully first, though...I had a similar situation and assumed queenlessness (actually a recovering laying worker hive) and had shook a lot of bees out, disrupting the hive before I started to realize that there was a regular laying pattern and a queen...
Keep in mind...you are also running the risk of a laying worker at this point if there isn't a queen in there yet. If you want to keep them, keep adding eggs/brood in there till you have a queen.