Unless you intend to not repeat fabrics between the 2 projects, you are ok. I have made memory projects using about that same number of my husband's shirts plus a neutral background. So far there are 3 -38" square wall hangings, a queen sized quilt and several ornaments. AND I still have enough fabric that I could make another queen quilt with probably more left from that! These are size L and most are long sleeved shirts. Consider how much fabric is necessary to make a shirt and there's a lot of fabric available for whatever you want to make. Hint--when you are deboning those shirts and taking buttons off, I used one of those craft boxes that some use to store embroidery floss on cards and kept the buttons from each shirt together in the compartments. You've got buttons forever, too!