Lightweight fusible - check.
Press seams open - check.
Just using sashing- HORRORS!!
Look at some of the regular quilt patterns that use big blocks! So much more creative! I used a BQ pattern from Maple Island quilts and mine turned out great! Here's a link to mine, I later added a border of the Mizzou fabric.
http://www.quiltingboard.com/t-126291-1.htm
I used the pockets from a hoodie to use as a pocket for your tv remote. Just make sure you don't quilt it closed!