I'm glad to go with 15. I can get 8 from WOF so with cutting two WOF, I'll get 16, one for me and 15 to share!
Though this time I'm cutting up smaller leftover chunks, and I've got way more than enough. I plan on getting them in the mail on Monday.
BTW - DH and I got the first roof section done. The wind has really picked up since we got off the roof so we wrapped it up just in time!