The blocks are 4 inches and I'm using Warm and Natural (pricey stuff, isn't it?). The quilt is about 55 x 70. I call it "nap size". Truthfully, I'm not entirely sure how it got that big. It started as a crib pattern and I pretty much doubled it and added borders. It's bigger than I thought it would be.
I'm pretty sure I'm going to pin baste it. The spray sounds like something I could make a mess with.