Don't panic yet.....people need to check their stashes. I usually don't PM the host until I know I have enough to participate......and that takes time. I've been cutting my pinks this morning and am finding that to make 10 participant baggies, it takes about one fat quarter. (so to put 20 different charms in each bag, for 10 participants you need 20 different pink fat quarters for the entire mailing). This will total to a 5 yard swap. ....You may want to check my math......
Anyway, your swap should work, because 5 inch charms can be added to those pesky 5" charm packs that we all bought, but now don't have enough of to make something. These will all help stretch and blend, especially after we have made the rounds in many colors. Also, if you don't use them as 5", just 2 simple cross cuts and you have a big stack of 2.5"scrappy charms that we can use color coded or scrappy, or trade off the other 3 of the 4 in the next scrap swap. So many opportunities, I think this swap will fly.