Well, if they're still you friends, that's good.
http://www.elsafari.cl/2016/04/27/wikkelhouse-una-casa-carton/
I wouldn't glue everything into a solid mass. This sort of structure benefits from being (at least potentially) relocatable. Having given it a few seconds more thought — Instead of clamping each gap, cut-to-length cables between end cap plates. It might require embedding conduits.
The picture I found shows two options for more durable flooring materials. Here's another with an exterior finish and windows I would prefer.
http://www.architectureadmirers.com/wikkelhouse-by-your-wishes-and-needs/
The design has the same flaw as an A-frame cabin The two short walls have all the doors and windows. That row of portholes is as good as it gets. I think you could cut a half-circle out of adjacent modules and get a larger opening, maybe even a doorway.