Yeah i think Mike is on the money here,
a simple question i was wondering, is it better for FGU to run 3 smaller modules together or just 1 big one...knowing the total information is the same?
Another way would be to rethink the whole thing... what is needed to create characters etc, what is needed to run an adventure...and finally what is needed to create an adventure...just a thought.
Ultimately, with the additional content coming down the pipe...you need to find a the best way to run this looking at FGU limitations (is it not based on a game engine...)