queen short drop 86" x 93" , 7998 in. sq., 3.26 times the materials from the current pattern requirements.
queen long drop 102" x 112", 11424 in. sq., 4.6 times the materials from the current pattern requirements.
current quilt size 43x57 in. 2451 in. sq.
I would get 4 times the amount of fabric so as to either make a full with a long drop or a queen with a short drop.