Since I messed up the quote thing, let me try again.
Numbers confuse me and I hate math but if I were reading that pattern I would think it meant 8 FQ's of 4 different fabrics. If that means a total of 8 fat quarters wouldn't that be 2 yards or... if you used 8 fat quarters of different fabrics that would be 4 yards, right?
16 FQ's would give you a 72" x 88" quilt without borders. How wide and how many borders does it call for?