I have done several afghans (posted several before) with a Lion Brand pattern that used their Wool-Ease Thick and Quick which is a 6-super bulky yarn. Have to make another but none of the colors suit my brother. They don't have much variety in their colors. I have found a yarn I think would be good but it is a 5-Bulky. Will I need more yards or less going down in the weight? Using the Super bulky it took 8 skeins which was about 848 yards (with some left over). Those were 106 yards per ball. The one I am thinking about is 153 yards per ball. So my math question is, will I need more, the same, or less yardage going down to a bulky yarn?