And, I'm finished.
By making my layout 4 blocks x 4 blocks instead of Pat's 3 x3, my quilt finished at 65 x 82.5. I kept all the border cuts to Pat's dimensions. I also did not change the basic layout that Pat designed. (Which I love.) I also made a few extra blocks and tweaked a few of Pat's blocks to better suit my fabric. (Mostly just the color balance.)
I have purchased my backing fabric and it is que to be quilt. (Probably not till next year. I would love to have it long armed with snowflakes.)
If anyone ever makes this quilt, I would love to share in your adventure.