Flydown,
I normally wait about one week to let them get the comb built and eggs laid. I have had swarm traps that were a 5 stack of Supers with, in one case, 10 foundation less frames and in another- 20 foundation less frames. I the first one, in 10 days, they filled the 10 frames and built 14? of cross comb below them. In the second case they built out all 20 frames in 7 days. They were both big swarms.
Jim