Thanks for posting your pattern - i LOVE J.Michelle's patterns btw. I'd say use the fabrics you have, add a random sprinkle of a few others from your stash. I don't know what your primary colors in your existing fabrics are - I'd throw in some black, gray and/or white and another contrasting color or 2. Absolute worst case if you really don't like it when you're done ~ it will be an awesome charity quilt to a senior, hospital, fire dept, or other organization. Please show us what you come up with!