Here are some recommended heights. Adjust them to suit yourself!
Sewing machine bed, to floor: 30"
Cutting table surface, to floor: 36" (or to hip bone)
Half square triangles: finished size + 7/8"
Quarter square triangles: finished size + 1-1/4"
1 yard of quilt fabric weighs approximately 4 oz.
1 pound of quilt fabric is about 4 yards.
A full size scrap quilt takes about 2 pounds of fabric pieces.