To cut or not to cut...

I decided to make a qwillow from these materials:

I wanted something pretty easy that could be taught in a day workshop.  I'm thinking of squares.  4 patches surrounded by some of those blacks on the left and alternated with 16 patch blocks.  The squares would be 3 inches finished.  But look at these: 

The pattern is so big!  Here's a photo with my 6 1/2 inch ruler beside it:  

So, to cut or not to cut!  I think these two would be wasted if I cut them the planned size.  So I think instead of putting 4 patches, I might put 8 inch squares of these materials.  Now to see if I have enough in the fat quarter to fussy cut that gorgeous flower....