MTS - your numbers are correct. And yes, I have 2 complete blocks leftover and not quite 1/2 of 6 different blocks leftover as well.
When I've used patterns that had leftover blocks - for color placement - the pattern SAID there would be leftovers.
The pattern is indeed easy - in fact the blocks were so easy I got bored making them! Broke up the job with out little projects and it still didn't take very long to do.
My local quilt shop has one made up using this pattern with browns and blacks - almost animal prints if I remember correctly. It's gorgeous.