That's generous. I do a traveling fly tier demo where it all fits in my shirt pocket!
The rule is that I would have enough materials to tie a dozen of each of 12 patterns. It really does have it all! The way it works is that I use what I think of as "system patterns". For example, what species does a thorax dun represent? Any depending on the colours and size. Same thing goes for the PTN and many other flies.
It is more a kit for a few days away, than one for half a year. Even so you could get enough for thousands of flies in a shoe box.
Cheers,
A.