Multiple iStopmotion stations each with remote camera

I currently use a new Apple Airport Express to provide a stable wifi for two remote camera setups (Two iPads and two iPod Touches-5th gen).
This is in a classroom situation and the connection is pretty good (with the occasional dropout occurring).
I even use the AppleTV to Airplay the animations.

I need to know if anyone has run more than 2 stations simultaneously on the same wifi network successfully.
I am hoping to run 5 or more stations at the same time similar to above.
Perhaps I will need multiple wifi routers if iStopmotion is heavy on the network bandwidth.

Anyone done testing for this kind of classroom environment?