JeannieG as to precuts, I really can't design something around these. Many of us don't have precuts, if by precuts you mean charms and layer cakes, and my only precuts are a box of assorted 2-1/2" strips cut from scraps, and the same with the box of 4-1/2" squares, that I suppose become precuts as they sit in the box waiting to go into a quilt.
