"Just do it" - I've quilted three king size quilts on my DSM - 120 x 120, 110x110, 110x110. I start in the center of the quilt and then just keep working outward. I have three 2 x 4 folding tables (available at Walmart, Sam's club, and Amazon.com) - I place one in front of my sewing machine and the other two at the left side. That way the weight of the quilt is fully supported. Wouldn't think of sending out my quilts to be longarmed. Good luck and yes, you can do it.