Oh boy can I ever relate to this thread! I have had these problems before myself and you don't want to know the bad words I called the designer and kit assemblers .... LOL!
The smart thing to do is like everyone said, check those blocks first by making one up in stash fabric and check the fabric contents when you buy it. A lesson learned the hard way really sucks!
I hope you gals are able to get your nice projects together ok. It sounds like it is really cool if you like it so much. You have good taste scissor queen.