Okay everyone, I need your help!

I’m making the super adorable Leaf Blanket for a friend. Well, eventually for three different friends who are all due at about the same time. So I stopped by one of my favorite yarn stores to see what good superwash wool I could find in pretty greens. I decided on cost vs. softness to go with Cascade 128. I love Cascade and this is a super soft yarn. But I can’t get gauge.

When I knit on a US 15, the fabric is really loose (and still a little tight for gauge). I can move to a US 13, which will make a nice fabric, but it will probably make a smaller blanket.

Of course I searched Ravelry, and some people have knitted with this very yarn. A number have doubled up the yarn, but there wasn’t enough of any one color to do that. Others have used the yarn single, but few noted what needle size they used on their project notes.

So what do you think I should do? Should I knit on the 15 and have a super airy blanket or should I knit on the 13 and end up with a smaller blanket? Let me know in the comments what you think I should do!