Thanks, that clears it up for me.
I've been cutting away - and it turns out that about 2/3rds of my fabric has to be fussy cut.
Looks like I'll end up with enough for three sets. This is a situation where getting back duplicates isn't that big of a problem as with what I'm cutting to keep with for myself, I should end up with enough for 4 or 5 child size quilts. So as long as I don't get back more than 4 of any one set it would be fine.
When I get done cutting and know exactly what I've ended up with, I'll send a PM with my info. I also need to see how much I can stuff in a padded envelope. Many years ago I ordered 12 from the PO for block swaps, and they messed up and sent me two orders. I still have 9 left so I'll be good to go for a while.