Bonus baby quilt

My friend, JodieAnn, is cleaning out and redoing her sewing room, so, I got a couple of fun boxes full of scraps and pieces in the mail !  Included was a small pile of triangles that were matched with a solid yellow fabric.  After trying several layouts, I concluded that the prints would look better if they were paired with white.

So I decided to use a piece that I had just ordered from Connecting Threads (Starbursts and Flowers, from the Whisper Palette).  It made for a beautiful background fabric.  I played with the design last Sunday, and yesterday I got to put it all together.

Now my frustration is that I don't have a big enough piece of batting to use for this (I need a 45 inch square) without cutting into my roll of Pellon 80/20 that I got from Walmart.  It is 96 inches wide and I hate to cut into it for smaller quilts.  I may just break down and purchase a 45 x 60 sized batt if I can find one locally.  But for now, I can concentrate on piecing a back that will fit.