Congratulations on completing that neat pattern. A well basted quilt will be easier to manage. Some quilt shops will baste a quilt for you on their big machines. If I am quilting a large quilt on my B440, I use Hobbs 80/20 fusible batt. It takes some prep work but I have good results with it. Another option to use is 505 spray to get it basted. Start your quilting in the middle and work outward. The centre is the hardest but it allows you to move any extra backing out to the edges if needed rather then get wrinkles.